29 Lego Party Ideas for A Building Block Extravaganza

By Belinda Gosbee | Updated: March 27, 2024

    Is your little one pleading for a LEGO birthday party this year? If you don’t know where to start, this guide will give you all the LEGO party ideas you’ll need – from food to games, decorations, and party favors. The best part? They’re super easy!

    Lego Party Decoration Ideas

  1. LEGO-Colored Balloons
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    You’ve no doubt got a lot of building block imagery planned for your LEGO party decorations. So to complement all those bricks, this 127-piece balloon pack gives you all the primary colors associated with LEGO blocks. Form an arch around the buffet table or divide them up around the party.

  3. DIY Printable Invites 
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    Creating party invitations has never been so easy! Let a talented designer customize the invites for you, then print them on cardstock – either at home or your local print store. You could also email or text the invites to parents.

  5. Candles
  6. The perfect birthday candles are those that transform the entire cake. Start with a basic iced cake (store-bought or homemade), and these candles will LEGO-fy it in seconds.

  7. DIY LEGO Treat Box 
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    These LEGO head-style treat boxes come as DIY printables – so you can print them at home or your local printer. It’s best if you print them on cardstock, then simply cut them out, fold them, and use a bit of glue or tape to secure them closed.

  9. Party Decorations


    This fun set includes a banner-style sign, a ribbon to hang the banner, and a tablecloth. Perfect for your theme! 

  11. LEGO City Tableware 
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    You’ll have your party supplies truly covered with this ultimate LEGO City package. The kit includes 8 dessert plates, 8 lunch plates, 40 blue napkins, 16 LEGO napkins, 8 cups, a table cover, and table decorations. You can also upsize to 16 or 24 guest packages.

  13. Honeycomb Centerpieces 
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    Table centerpieces are great for bringing each table into your theme. These honeycomb birthday party decorations are eye-catching and easy to put together in seconds. Each packet contains nine centerpieces.

  15. LEGO Movie Paper Plates
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    LEGO fans love LEGO movies, and these plates are an “awesome” way for them to eat their party delicacies. You’ll get eight in a packet featuring fun LEGO Movie characters Emmet, Batman, Rex, and Benny.

  17. LEGO Cake
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    It may not be edible, but this iconic LEGO cake makes a great party centerpiece. It has plenty of colorful construction, a top tier you can spin round, buildable candles, a balloon animal, and a top-hatted lego man that waves an age flag (from the enclosed sticker sheet.)

  19. Tablecloths
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    Tablecloths come in handy for presenting your theme at a party, whether for the buffet table or every table involved. This tablecloth pack comes as a set of three, making that job so much easier.

  21. Birthday Cake Toppers
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    Another simple way to decorate the birthday cake is to buy incredible custom pieces and pop them on a plain cake. The cake toppers come as names, numbers, and of course, a “Happy Birthday” sentiment and look superb. So now you can focus on the rest of the party planning!

    Lego Party Games and Activity Ideas

  23. Building Brick Glasses 
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    These LEGO-inspired building brick glasses make a fun activity and a lovely gift. You’ll get 12 glasses and 12 packets of mini-building bricks so kids can create their very own unique pair. Then they can wear them for the rest of the party!

  25. Free Printable Bingo
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    A completely free party game that’s sure to be a winner with kids is this LEGO bingo. You can get all the free printable files you’ll need over here – created and shared by a fellow parent, Big D & Me.

  27. Free Download Pin The Tail On The Lego
  28. Piñata
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    This is a pretty epic LEGO piñata, reviewed by parents as strong enough to give kids a good couple of turns each. It can hold over 3 pounds of candy(!) and has a weight-resistant string for hanging.

  30. Building Block “Twister”
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    Put your right foot here and your left foot there! Just like the original Twister game, this party pleaser lets the spinner direct you where to put your hands and feet – for a whole lot of laughs and silly photos. It includes a 5 x 6 ft. vinyl game mat and a cardboard spinner. 

  32. DIY Tote Bags
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    If you’re looking for unique birthday party ideas, this one’s great! Purchase some small, plain totes and print a yellow “LEGO head” on them following the directions (and free template) of Cutesy Crafts. Then allow each guest to draw their own face with a permanent marker and use it as their goodie bag or a place to keep any LEGO they may acquire.

  34. LEGO City Photo Booth  
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    Capture all of the party fun with a LEGO City photo backdrop and props. Kids can pose as their favorite LEGO character using one of the 12 photo props, while the backdrop also serves as a scene-setter for the party as a whole.

    Lego Party Food Ideas

  36. Rice Krispie Treats
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    These treats are effortless to make and look fab! The Stay @ Home Chef has created a recipe for you over here. Make them from scratch or buy some premade Krispies, then transform them into LEGO pieces with M&Ms and colorful icing.

  38. LEGO Cheese + Crackers
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    Simple but effective, these cheese and cracker bites need prime real estate on your buffet table. Designed by Tonya Staab, all you’ll need are rectangular crackers, cheese slices, a knife, and a small fondant cutter (or the large side of a piping tip.) Check out Tonya’s blog over here.

  40. Quick Marshmallow Pops
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    In the style of cake pops, come these quick and easy marshmallow LEGO head pops. Perfect for a kid’s birthday party! Turn to In Katrina’s Kitchen for your how-to tutorial. All you’ll need are marshmallows (in 2 sizes), yellow candy discs, lollipop sticks, and a black food coloring pen.

  42. The Main Event
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    If you feel like creating a Lego theme cake yourself, this idea not only looks superb, but it’s also pretty easy for novice bakers. In a nutshell, it’s simply a cake mix, some marshmallows, and frosting! Let Betty Crocker show you how here.

  44. Popcorn + Snack Boxes
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    Displaying party food becomes easy when you have these fun-colored brick popcorn boxes. Whether it’s popcorn, chips, or candy, they’ll look bright and eye-catching in these boxes.

  46. Chocolate + Candy Molds
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    These molds are priceless, in my opinion. You don’t need to have an artistic bone in your body to impress your party guests. Whether you use chocolate or candy melts, these molds will give you LEGO blocks and people that can be used as cupcake toppers, birthday cake accents, as a buffet table treat, in party favor bags, or on sticks as “suckers.”

    Lego Party Favor Ideas

  48. Brick Party Cups 
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    These whimsical LEGO brick party cups (with straw and lid) will help you build a great LEGO party – and when they’re not being slurped, they work as instant decor. Of course, you could also pop them into goodie bags!

  50. LEGO Minifigures – DC Heroes
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    These little guys aren’t cheap – as with LEGO in general – but they make great prizes for LEGO party games. Or you could use them to decorate the birthday cake. You’ll get six packets, each containing one mystery LEGO person.

  52. LEGO Storage Heads 
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    These official LEGO heads (meant for storing LEGO) make excellent LEGO birthday party ideas. Choose from mini, small, or large, and fill them with all manner of sweet or savory snacks. Even if you buy only one, it’ll be an excellent accent for the table.

  54. Pencil Sharpener Party Favors 
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    These building block pencil sharpeners make classic LEGO party favors. Add a LEGO pencil, and you’ve got the perfect duo. You could also scatter these across the buffet table or use them as a place marker for each kid at the table. The pack of 12 comes in assorted colors.

  56. Gummy Block Candy
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    These gummy blocks are excellent for a LEGO-themed birthday party, and they really stack together. They have multiple uses – use them as cupcake toppers, birthday cake decorations, or just as yummy treats on the table. Age 4+

  58. Brick Suckers
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    A wonderfully on-point addition to your candy buffet, kids will go crazy for these little LEGO-style suckers. There are four flavors – cherry, raspberry, apple, and lemon – and you’ll get three of each individually wrapped.