15 Best DIY LEGO® Halloween Costumes for Kids & Adults (2026)

Halloween is all about creativity, and there is no better way to celebrate than with a costume you make yourself. For LEGO® fans, a few simple craft supplies can become almost anything, from a giant LEGO brick to a favorite Minifigure.

That makes DIY LEGO Halloween costumes a fun choice for families heading to Brick or Treat at LEGOLAND® Florida Resort. Adults and children can wear costumes during Brick or Treat, giving everyone an opportunity to show off their creativity while enjoying trick or treating, LEGO Monster Minifigures, Halloween entertainment and more.

Brick or Treat takes place on select dates from September 5 through October 31, 2026, and is included with General Park Admission. The 2026 celebration features the all new Brick or Treat Street, where families can explore LEGO Halloween themed homes, collect candy and meet LEGO Monster Minifigures.

So grab some cardboard, paint and your best building ideas. Here are 15 DIY LEGO Halloween costumes that can bring a little extra bricktastic fun to Halloween.

15 DIY LEGO Halloween Costume Ideas

1. Classic LEGO Brick Costume

Sometimes the simplest idea makes the biggest impression.

A classic LEGO brick costume is one of the easiest DIY Halloween costumes to make at home. Start with a large cardboard box that fits comfortably over your child's torso. Cut openings for the head, arms and legs, then paint the box in a bright LEGO inspired color.

The signature studs are what make the costume instantly recognizable. You can create them using lightweight plastic cups, small cardboard circles or other safe craft materials attached to the front of the box.

For a family costume, have everyone choose a different color.

DIY tip: Use lightweight cardboard and keep the costume roomy enough for comfortable walking and movement.

2. LEGO Minifigure Costume

Want to take the DIY LEGO costume idea one step further? Turn your child into a giant LEGO Minifigure.

The body can be made from a cardboard box painted to look like a Minifigure torso. Add simple printed or painted details, such as a shirt, jacket, superhero outfit or classic LEGO pattern.

For the head, use a lightweight cardboard cylinder or a large craft structure designed specifically for costume use. Remember that LEGOLAND Florida does not permit full face masks at Brick or Treat, so make sure your costume keeps the face visible.

This is also a great costume for adults who want to join the Halloween fun.

3. LEGO Astronaut

Three, two, one... build!

A LEGO astronaut costume can start with everyday clothing. Pair a white shirt and pants with silver accessories, then add a cardboard LEGO style control panel to the front.

You can create a simple space helmet using lightweight craft materials, but make sure your child's face and vision remain unobstructed.

For an extra LEGO twist, add colorful brick shapes to the costume or create a cardboard backpack that looks like a LEGO space pack.

This costume is especially fun for kids who love space, rockets and building their own adventures.

4. LEGO Pirate

Ahoy, LEGO fans!

A LEGO pirate costume is an easy option for kids who want something recognizable without a lot of complicated crafting.

Start with a pirate shirt, black pants and a bandana. Then create a cardboard LEGO inspired treasure chest, sword alternative or oversized brick accessory.

Because Brick or Treat costume guidelines prohibit costumes that resemble weapons, keep accessories clearly playful and non weapon like, or skip them altogether. Loose costume pieces that could interfere with ride safety should also be avoided.

The result is a pirate costume that feels right at home among the Halloween fun at LEGOLAND Florida.

5. LEGO Princess

For a LEGO inspired princess costume, start with a favorite dress and build from there.

Create a colorful cardboard crown with LEGO style studs, then add a few oversized brick details to the dress or accessories. You could even make a simple cardboard LEGO wand substitute using bright colors and brick shapes.

The best part is that this idea can be adapted to almost any favorite princess look.

Make it personal: Let your child choose the colors and decorations. A DIY costume does not need to look perfect. It just needs to feel like theirs.

6. LEGO Robot

Cardboard boxes are the secret ingredient behind many great DIY Halloween costumes, and a robot is one of the easiest designs to build.

Use one box for the body and smaller lightweight pieces for details. Cover the costume in foil or metallic craft paper, then add colorful LEGO inspired buttons and panels.

You can even create a name badge that says "ROBOT 1" or let your child invent their own LEGO robot character.

Just remember to keep the costume comfortable enough for walking, rides and trick or treating.

7. LEGO Monster

Brick or Treat is filled with LEGO Monster fun, so why not create your own?

Take inspiration from classic Halloween monsters and give the design a LEGO twist. A green shirt, cardboard brick shapes and a fun monster face can become the foundation for a DIY costume.

You could create a friendly monster with oversized LEGO style eyes, colorful teeth or a brick patterned body.

Keep the overall look playful and family friendly. Brick or Treat is designed as a family Halloween celebration, with playful LEGO monsters rather than horror focused Halloween theming.

8. LEGO Pumpkin

A LEGO pumpkin combines two Halloween favorites in one costume.

Wear an orange shirt and pants, then add a large orange cardboard pumpkin shape decorated with LEGO style studs. A green hat or cardboard stem can complete the look.

For a sibling costume, one child can dress as a pumpkin while another dresses as a LEGO brick.

For an even bigger family idea, everyone can dress as different Halloween LEGO creations.

9. LEGO Race Car Driver

For the kid who is always ready to race, create a LEGO race car driver costume.

Start with a racing shirt or jumpsuit. Add a cardboard racing number and colorful brick details.

You can also create a lightweight cardboard steering wheel for photos, but leave it behind when riding attractions.

Want to take the idea further? Turn the costume into a LEGO race car by creating a lightweight cardboard front that attaches to the body. Just make sure it does not interfere with walking or ride safety.

10. LEGO Firefighter

A firefighter costume is another classic that can easily get a LEGO makeover.

Start with a red or dark colored shirt and pants, then add reflective strips and a homemade cardboard badge. A yellow LEGO style brick pattern can give the costume its signature look.

Avoid realistic or weapon like accessories and keep the design focused on the playful character.

This is also an easy group costume. One child can be the firefighter while siblings dress as LEGO construction workers, robots or Minifigures.

11. LEGO Ninja

A LEGO ninja costume can be surprisingly simple.

Start with comfortable black clothing and add a colorful belt or sash. Then create a few oversized cardboard LEGO details to make the outfit feel more like a Minifigure.

Choose a bright color for the accents so the costume stands out in family photos.

Because Brick or Treat costumes need to be family friendly and safe for rides, avoid adding realistic weapons or long accessories.

12. LEGO Chef

For a costume that is easy enough to make in an afternoon, try a LEGO chef.

A white shirt, apron and chef hat create the basic look. Add colorful cardboard LEGO shapes to the apron and create an oversized LEGO inspired name badge.

You could even make a pretend giant LEGO pizza for a photo prop.

This costume works especially well for adults who want to participate in Halloween without wearing a full body costume.

13. LEGO Construction Worker

Building is at the heart of LEGO play, making a construction worker costume a natural choice.

Start with a high visibility style vest and comfortable clothes. Add cardboard LEGO bricks, a homemade name badge and other colorful details.

For siblings, pair a construction worker costume with a LEGO brick or LEGO robot costume.

The whole family can become a DIY LEGO building crew.

14. LEGO Flower

Not every LEGO Halloween costume needs to be a character.

A giant LEGO flower is a colorful and creative option for younger children. Use green clothing for the stem and leaves, then create large cardboard petals decorated with LEGO style circles.

A yellow center completes the look.

This costume is especially fun for families visiting LEGOLAND Florida because it fits right into the colorful, imaginative world of the Resort.

15. LEGO Family Brick Costumes

Why choose one costume when the whole family can build together?

Create a different LEGO brick costume for every member of the family. One person can be red, another blue, another yellow and another green.

You could also create a complete LEGO themed group:

This is one of the easiest ways to create memorable Halloween photos without everyone needing to make the exact same costume.

How to Make a DIY LEGO Costume

Most DIY LEGO Halloween costumes can be created with supplies you already have at home.

Step 1: Choose your LEGO idea

Pick one simple concept before you start. A LEGO brick, Minifigure or pumpkin is usually easier to create than a complicated character.

Step 2: Measure for comfort

Your costume should allow your child to walk, sit and move their arms comfortably.

This is particularly important if you plan to wear it to a theme park.

Step 3: Build the main shape

Use cardboard for larger costume pieces. Avoid making anything unnecessarily heavy.

Step 4: Add the LEGO details

This is where kids can get creative. Add colorful studs, Minifigure style patterns, faces and other decorations.

Step 5: Test it before Halloween

Have your child wear the costume around the house. Check that they can walk comfortably and that nothing catches or drags.

What to Keep in Mind for Brick or Treat Costumes

Planning to wear your DIY costume to Brick or Treat at LEGOLAND Florida Resort? A little preparation can make the day much easier.

LEGOLAND Florida welcomes children and adults in costume during Brick or Treat, but there are important costume guidelines. Full face masks are not permitted. Costumes cannot resemble weapons, and loose pieces that could interfere with ride safety should not be worn. Costumes should also remain family friendly.

The Resort recommends choosing a comfortable costume that works for walking around the Park and planning for Florida weather. A change of clothes can also be useful in case of rain or high temperatures.

Before you go, remember:

Show Off Your DIY Costume at Brick or Treat

Once the costume is finished, there is only one thing left to do: wear it somewhere that feels made for LEGO Halloween fun.

Brick or Treat returns to LEGOLAND Florida Resort on select dates from September 5 through October 31, 2026. The celebration includes trick or treating, LEGO Monster Minifigures, Halloween entertainment and the all new Brick or Treat Street.

Brick or Treat Street takes families through an immersive LEGO Halloween experience featuring playful monster homes, including Wacky Witch's Cottage, Spider Lady's Castle and Plant Monster's Greenhouse. Candy stations are available throughout the Park from 2 p.m. to 7 p.m.

The Halloween fun continues with experiences such as The Great Monster Chase, Jammin Jacks and Monster Skytacular, the nighttime drone show featuring drones, fireworks and music.

That means your DIY costume can become part of a full day of LEGO Halloween fun.

Whether your child arrives dressed as a giant LEGO brick, a Minifigure, a monster or something completely original, the most important part is letting their imagination lead the way.

Build a Halloween Costume They'll Remember

The best DIY Halloween costumes do not have to be complicated. A cardboard box, some paint and a creative idea can turn into a LEGO brick, a Minifigure, a monster or an entirely new character.

And when that costume is worn to Brick or Treat at LEGOLAND Florida Resort, the experience becomes even more memorable.

Gather the family, start building and let the kids take the lead. After all, the best Halloween costume might be the one they imagined themselves.