10 LEGO Birthday Party Activity Ideas

Updated on September 20, 2019
daybydaymom profile image

Lisa is a mom and loves to utilize her craftiness to throw her kids' birthday parties.

Our son's 5th birthday turned out to be a hit. We did a LEGO theme, and I'm glad we did. Here are a few photos and tips for the party set up so that you can have a great party too. Bonus: There are a few more than 10 ideas if you look at the pictures closely.

Since we homeschool, birthday parties and get-togethers are important. Plus, I'm home a lot, so I made a bunch of party stuff in the weeks leading up to the party whenever I could find some extra time. This meant the party was low stress because it didn't cost a lot. I slowly added ideas that went with the theme and just did as much as I had time to do.

Hopefully, you will find some ideas that you like!

LEGO Rice Krispies
LEGO Rice Krispies

1. LEGO Krispies Tips

The LEGO Rice Krispies were a hit. I put lots of food coloring in once the marshmallows melted, before adding the cereal. Make the color a bit darker than you think you want. Add the cereal. And don't forget to grease your dishes. (No grease and cold Krispies are hard to pry out of the dish the morning of the party.) Also, put the M+M's on the Krispies before you put them in the refrigerator to cool, they will stay on better than mine did. I cut some into rectangles and some into squares so they didn't look so uniform. And WALA not only do these taste good, but they also looked great for our LEGO theme.

The Food Area Decorations
The Food Area Decorations

2. Lego Letters for the Birthday Boy's Name

Depending on how old your kids are, you could put them on this project! I did these weeks in advance and my son took them apart and rebuilt them multiple times.

3. Homemade LEGO Confetti

Lego confetti made from a hole punch and computer paper scraps from the LEGO decorating activity. It took a while, but I'm so glad I did it. The confetti came in handy for extra decoration all over! They really added a nice touch at the different play areas and food tables.

4. Balloon Garland

I liked hanging balloons like this instead of using helium or taping individual balloons to the ceiling. We hung them from the ceiling fan to the corners of the room. (FYI: The older kids that came swung at them right away because they were tall enough! Just be prepared.) My mom and I blew up balloons and I tied them to a ribbon (like the kind you use for birthday presents). I tried to space them evenly, but I did not measure and they turned out fine. I also tried to hang the balloons in the same color patterns on each string, but I'm not sure that really makes too much of a difference as long as there aren't a bunch of colors all together. I liked this decoration better than hanging streamers too. Although streamers may have been a nice addition to this, it was just so busy already...I'm definitely going to do this again at future parties.

Balloon Garland
Balloon Garland

5. Art Station

Decorate your own LEGO man. Glue, sticker, markers, and printout/cutouts on computer paper. Really good for the littler ones, but all ages enjoyed this. Plus they got to take them home if they wanted. See image below.

Decorate your own LEGO man!
Decorate your own LEGO man!
LEGO man template
LEGO man template
 LEGO piñata
LEGO piñata

6. LEGO Piñata

LEGO piñata! We used a cardboard box, masking tape, 1 bag of large candy and a few age-appropriate party favors, small rope- knots tied on the inside, white tissue paper, a styrofoam noodle (for the 4 cylinders), and a Sharpie for the writing. (Of course, you will also need a place to hang it and something to hit it with).

Next time we won't use a cardboard box, just paper mache . . . even if the tape is minimal it was too hard for the kids to break open. We did it this way because it was a lot faster than waiting for the layers of paper mache to dry. Made for good memories and laughs though.

Pin the smile on the LEGO guy
Pin the smile on the LEGO guy

7. Pin the Smile

Pin the smile on the LEGO guy. Made from a cardboard box, computer paper, glue stick, and pen. I considered cutting a hole out for the face and making this a photo opportunity to send with thank you cards, but I chose the game. Maybe if I had someone to take the pictures while I entertained the rest of the kids I would have done this.

8. LEGO Garland

I used this LEGO garland to decorate the windows. I cut rectangle LEGOs with six circles and squares with four so it wasn't just one type. Wrapping ribbon, scissors, computer paper, (the nails were even already up from the Christmas garland).

LEGO Garland
LEGO Garland

9. Building With LEGOs

Of course, we had to have a LEGO building table! Complete with more LEGO confetti. (We had some larger sized LEGOs or MegaBlocks for the younger kids—you can see them in the balloon garland picture on a lower table, I found out my 8-month-old loves them already!)

10. Last but Not Least, the Cake!

We did a trial run of square cakes with four cupcakes on top, but they looked and tasted awful. So we just ordered a basic sheet cake with primary color decorations and wording—we felt after our own attempt it was worth the money.

My friend found these candy LEGOs you can actually build with. (They tasted like sweet tarts.) My son helped build the combinations and place them on the cake. So fun!

our cake
our cake

Party Set Up

we had a ton of food, not shown in this picture—it was still in the fridge.
we had a ton of food, not shown in this picture—it was still in the fridge.
The Lego colors made it so easy to find party plates and table cloths to match.
The Lego colors made it so easy to find party plates and table cloths to match.

Bonus Idea!

I also set a pint-sized jar of LEGOs and a print out (like the table below) by the front door when people walked in. Everyone enjoyed this one more than I expected. And the little boy that won was the shyest one there. His face just lit up when I announced he won and gave him the jar. So perfect.

Guess how many LEGOs are in this jar and win!

Number Name

_______ __________________________________________

_______ __________________________________________

_______ __________________________________________

Questions & Answers


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      • profile image

        nili buaron 

        4 years ago

        This Lego-themed party will delight Lego fans of all ages! Thanks for sharing! :)

      • daybydaymom profile imageAUTHOR


        5 years ago from Oregon

        I just saw some of the 'building blocks' candy near the registers at ToysRus last week. You may find them online too. I received them as a gift from a friend prior to the party. FYI when you search, they are not LEGO brand items. Good luck!

      • profile image


        5 years ago

        Love all of this!! Do you know where you got the lego candy from?

      • profile image


        5 years ago

        also the template was good for thank you letters!

      • daybydaymom profile imageAUTHOR


        6 years ago from Oregon

        Oh good, I'm glad you both liked it. Have fun and happy party planning!

      • idigwebsites profile image


        6 years ago from United States

        This Lego-themed party will delight Lego fans of all ages! Thanks for sharing! :)

      • Connie Smith profile image

        Connie Smith 

        6 years ago from Tampa Bay, Florida

        Love all these ideas. My grandson wants a Lego party this year. This is so much more fun and creative than just going to the party store for the latest action figure plates, cups and tablecloth sets. We will definitely be using these ideas. Thanks for a great hub!


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