How cute is this DIY LEGO costume? Would your LEGO enthusiast love to wear a giant DIY LEGO costume for Halloween this year? Let us help you with this fun idea – just one of our many homemade Halloween costumes. We at Kids Activities Blog just love costumes like this that are cheap and easy to make!

Super Easy Lego Halloween Costume For Kids
Needing a quick and easy Halloween costume? This DIY LEGO costume is perfect! Why? Well, it’s:
- Uses recycled materials like cardboard and boxes.
- Budget-friendly- only needs minimal crafting supplies.
- Easy to make!
- Can be customized by using your favorite color.
- Perfect for kids of all ages and even adults.
Related: More DIY Halloween costumes
LEGOs are a staple in our house. From an early age my kids loved LEGOs, so making this LEGO Halloween costume was an exciting time in my house!
How To Make A DIY LEGO Costume

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Supplies Needed To Make A Lego Costume
- Square carboard box or rectangular cardboard box
- Spray paint of your favorite color
- Hot glue gun
- Scissors
- Ribbon or string
- Hole punch
- Marker
Directions To Make A LEGO Halloween Costume
Step 1
Cut the flaps off your box.
Step 2
Take your box and cut out leg, arm, and head holes. Cut out circles from the top of the box, bottom of the box, and the sides.
Step 3
Spray paint your box your child’s favorite color.
Step 4
Allow it to fully dry.
Step 5
Take the flaps and trace circles on it with a marker.
Step 6
Cut out the circles.
Step 7
Glue them to the from of your LEGO costume.
Step 8
Punch holes in the box to tie your ribbon or string to make arm loops.
Step 9
Tie the ribbon or strings to back, making loops for the arms so your child’s costume won’t fall off.
Finished Homemade LEGO Costume
There! Your super cute and easy LEGO costume is finished! Be a long LEGO, a square LEGO, whatever your favorite LEGO is!

Our Experience Making A Homemade LEGO Costume
We try to make the kids costumes each Halloween. This year, Lowes inspired us to “think outside the box” and with the help of a giant appliance box (Thank you handy shopping assistant Doug!!) and a couple of cans of spray paint as well as several smaller boxes we had Legos. Human Legos.
Lego blocks are one of our favorite things to play with. All. Day. Long. The kids absolutely love building and creating.
Red is my son’s favorite color. He’s thrilled with his costume – and I was thrilled with how easy it was to create. All it took was a short trip to my local Lowes.
LEGO Costume Is Perfect In A Pinch
These LEGO brick costumes are some of my most favorite homemade Halloween costume because they’re simple and easy to make in a pinch. And there are many different ways to make these LEGO bricks, but this is the easiest costume to me. This can also be a family costume!
Simple arm holes, favorite colors, cardboard…it’s awesome and one of the best costume ideas. It can be kid costumes or adult LEGO costumes, regardless they’re perfect for Halloween night.
DIY LEGO Costume

Making a Lego costume has never been easier! You just need a few items! The best part is, this LEGO is not only easy to make, but quick. Perfect when you need a Halloween costume in a pinch.
Materials
- Square carboard box or rectangular cardboard box
- Spray paint of your favorite color
- Hot glue gun
- Scissors
- Ribbon or string
- Hole punch
- Marker
Instructions
- Cut the flaps off your box.
- Take your box and cut out leg, arm, and head holes.
- Cut out circles from the top of the box, bottom of the box, and the sides.
- Spray paint your box your child’s favorite color.
- Allow it to fully dry.
- Take the flaps and trace circles on it with a marker.
- Cut out the circles.
- Glue them to the from of your LEGO costume.
- Punch holes in the box to tie your ribbon or string to make arm loops.
- Tie the ribbon or strings to back, making loops for the arms so your child’s costume won’t fall off.
MORE DIY HALLOWEEN COSTUMES FROM KIDS ACTIVITIES BLOG
- Toy Story Costumes we love
- Baby Halloween costumes have never been cuter
- Bruno costume will be big this year on Halloween!
- Disney Princess costumes you don’t want to miss
- Looking for boys Halloween costumes that girls will love too?
- DIY Checkers Halloween Costume you can make at home
- Ash Pokemon costume we this is really cool
- Pokemon costumes you can DIY
- Make your own Crayon costume for Halloween.
- Make these LEGO friendship bracelets!
- Don’t miss this LEGO recycling program!
How did your LEGO costume turn out? Comment below and let us know, we’d love to hear you!
My son actually wants to be a blue lego this year. he he.
A great idea would be…a bubble bath with balloons as the bubbles. Except my son would pop them. ha ha.
I love the lego idea. This is going to be the first year my son will be actually going treat a treating so i’m excited. My husband and I are going to be football players and my son (18 months old) is the football. Had a friend sew white stripes on a brown onesie.
I love this simple idea! I remember when as a kid a friend of mine was a tissue box, only she made it too wide and couldn’t get out the door. It must have been a flat-packed box to get inside in the first place. : )
Last year we made a lego costume too! I cut hole in the box and then put solo cups through the holes from the inside and secured them with duct tape. Then I spray painted the whole thing. It was awesome.
We need to get busy making a few things this week.
My son went store bought. He’s going to be Iron Man and loves his costume! My daughter was a little more difficult, but easy at the same time. She likes this show called Adventure Time and there was a character named Fiona, which was a female version of their regular, hero character, Finn. She decided to be that for Halloween. It’s not a costume you can buy and the hat Fiona wears proved to be a bit difficult for me as I don’t sew. Luckily, my step-mom is a sewer and Ariel’s dad found a tutorial on You Tube, so now, she has her hat. The rest of the costume was easy, blue skirt, blue top, white knee socks, and a sword. She loves it! She wears her hat all the time too…because that’s my daughter…she marches to her own beat.
Legos is an awesome idea! Never thought of that! Henry’s going at The Cat in the Hat this year. Super simple, use a black sweatshirt and pants and add a white felt/fleece/fabric oval to the front of the body (I used safety pins so nothing’s permanent). Add a cute red bowtie made of felt too. I did buy the hat though. Couldn’t have made it for less $$ and this way it looks right too 😀 — I added a tail just by rolling up some black fabric and also safety pinning it together and onto the back of the pants (I didn’t cut the fabric or anything, I try to make everything temporary!) — Add some white gloves and we got a cat! And probably some cute face painting too.
What a very cool idea… My kids love Legos but they love the mini figures and alas those are a little harder to make. Looks fun though!
My 3yr old son is really into space right now. He wants to be an astronaut. So, we have a hand-me-down orange NASA jumpsuit he’ll wear, and we’re going to take a large hanging clothes moving box, paint it white, write USA on it and some knobs. Then, we’ll put it on top of our wagon as his space ship. My 1 yr old son is going to be a green Martian. We’re going to dress him in green, paint his face, and I’ll make him a hat with antennas. Can’t wait to take them trick or treating!
I am past the costume age – unless there is a special party of something. However, I am loving the grandchildren thing. This year the 3 year old is into Disney princessesses, as she says. So, she is going as Cinderella. To complete the look, 11 month old baby brother is the “fat rat”. Momma is the fairy godmother. And Daddy is Prince Charming. They ought to be quite the spectacle going around the neighborhood and at the church Halloween party! Her costume is purchased, but everyone else is homemade.
This year we went store bought… well for Big M anyway. He saw a Bumblebee costume he wanted. Little M has a room full of dress up clothes and has decided to make her own costume out of what she has (oh yeah I LOVE that!!!) For Halloween pictures she dressed all in pink with her pink umbrella and walked around saying “Save me, Save me.” We think she was a damsel in distress?!?!?
Last year we went totally homemade. Big M was a garbage truck. He had a box in the front to fill candy. He could put it over his head and dump it into the back. (Daddy did that one.) Little M and I worked together to sew her mermaid costume. It was fun!
ps. ADORABLE LEGOs you have there!