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Birthday theme

🧱 Lego Theme

Kids playing with Lego bricks

Nothing says "let's build something awesome" like a LEGO-themed birthday party! Whether your little builder is turning 4 or 14, this theme is endlessly fun, endlessly colorful, and surprisingly budget-friendly if you know where to look. Here's everything you need to pull off a brick-tastic celebration.

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Products we love to make your lego party a success

Lego themed birthday party family shirts

Lego Themed Birthday Party Shirts

Matching shirts for the birthday builder and the whole family.

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DIY Lego Party Printables preview

DIY Lego Party Printables

Crafts, recipes, and games — our own printables, straight from our Etsy shop.

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Lego Themed Party Favors

Lego Themed Party Favors

A 104-piece favor set — notebooks, keychains, bracelets, and more for every guest.

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LEGO Classic Medium Creative Brick Box

Lego Set

A 484-piece LEGO Classic Creative Brick Box — a fun party activity or a great party favor.

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Building Block Birthday Party Decorations

Lego Decorations

A 173-piece decorations set — banner, balloons, tableware, and more for up to 20 guests.

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Building Block Number Birthday Candle

Lego Candle

A building-block-style number candle to top off the birthday cake.

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LEGO Birthday Party Cake Building Set, 219 pieces

Lego Birthday Cake Set

A 219-piece LEGO buildable birthday cake — a fun activity that doubles as a centerpiece.

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Dinosaur World Building Block Eggs

Dinosaur Building Blocks

Surprise egg dinosaur building sets — a fun building activity or party favor in one.

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Mini Animal Building Block Party Favors, 867 pieces

Polybag Party Favors

30 individually wrapped mini building-block animals — an easy grab-and-go favor for every guest.

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DIY Building Bricks Glasses, 12 pack

DIY Building Bricks Glasses

A 12-piece set of building-brick glasses guests can decorate — a fun photo-op craft.

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Brick Like This LEGO Party Game

Brick Like This! Game

A fast-talking, fast-building LEGO party game with 92 models and 20 challenge cards.

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Candy Bricks, 18 pouches

Candy Bricks

18 individually wrapped pouches of fruit-flavored candy bricks — a sweet, on-theme treat.

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Annie's Organic Building Blocks Fruit Snacks, 10 pouches

Annie's Gummy Blocks

Organic building-block-shaped fruit snacks — a better-for-you sweet treat option.

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15-Foot Flexible Dual-Color Race Track

Race Track

A 15-foot flexible race track that bends into loops, ramps, and spirals for endless play.

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Building Base Plates, 10 pack

Base Plates

A 10-piece set of 10"x10" base plates in assorted colors, compatible with all major brick brands.

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Build and Customize 10 LEGO Race Cars Kit

Lego Race Cars Kit

A 124-piece kit to build 10 custom race cars, complete with a 3-foot race track.

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Mini Train Building Block Toy Eggs, 12 pack

Mini Train Building Block Sets

12 surprise-egg mini train building sets in 6 designs — collect them all to build a complete train.

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Want help pulling it all together?

We can plan and style your lego theme birthday from start to finish.

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