My youngest daughter, Olivia, turns 7 today. How is it even possible that my BABY is 7?! Over the weekend we celebrated her with a fun Spongebob Squarepants Birthday Party. It was filled with family and friends, Krabby Patties, pineapple decorations, balloons, Bubble Buddies, and lots of laughs! And of course our favorite characters! Without further ado, check out the party that I put together, as always, on a budget! Free printables are available at the bottom of this post.

Spongebob Themed Cake Table

DIY Underwater Party Decor

If you’ve checked out my other parties, you knew that I would set up a fun themed table:

DIY Child's Spongebob Birthday Party

The star of the show is that amazing Spongebob cake that was made by a local home baker. This cake not only looked amazing, but it was one of the best-tasting cakes we’ve had in the middle. The devil is in the details and inside the cake, we were surprised with a fun yellow and pink pattern! She even put together a tutorial if you are cake inclined:

Gorgeous Spongebob Tiered Cake

So cool, right?!

Tiered Spongebob Cake with Pineapple Topper

I created the Krusty Krab restaurant using a friend’s lobster cage. For the flags on the front, I created them in Illustrator and printed them onto cardstock. I used my Cricut to cut out a seashell and the lettering for the Krusty Krab sign. A broken butterfly net was used for the pole.

Next, check out those amazing Krabby Patties! I really wish these were my brainchild, but they were totally the creation of my friend Krista and they were the hit of the party! Seriously, everyone loved these things. A step-by-step recipe will be coming soon, courtesy of Krista.

DIY Krabby Patties for Spongebob Themed Party (Hamburger Cookies)

How awesome are those Paper Lantern Jellyfish? They are super simple to create with paper lanterns and streamers and they are pretty inexpensive too. Perfect for any underwater themed party:

DIY Jellyfish Party Decor

Of course, I made some fun water bottle labels as well to stick with the Spongebob theme:

Spongebob Themed Birthday Party Ideas

Did you notice those sweet little goodie bags? Olivia helped me make these and I love how they turned out. We bought yellow popcorn boxes and used a Sharpie to draw on the facial features. Googly eyes were hot glued in place, along with two teeth, which were cut from regular white paper. I filled them with Spongebob-themed party favors, such as a punch balloon, whoopie cushion, kazoo, and lollipop. I also made some “Make your own Bubble Buddy” labels for the bubbles.


Spongebob Themed Birthday Party Ideas

Bikini Bottom Food Table Set-Up

The food table is full of Spongebob Party Food Ideas! I filled buckets with fruit and chips. I made Jello Jigglers using a Spongebob kit that I found in the local grocery store.

DIY Spongebob Party Table

Plankton Pretzel rods were another easy recipe and were super tasty. Those were placed in a “Chum Bucket” that I personalized with my Cricut and vinyl.

Plankton Pretzel Rods

I also made the banner and the Bikini Bottom sign, which is just a styrofoam wreath and ribbon. Using my Cricut Explore I cut out the “Bikini Bottom” letters and hot glued them in place. I used 3M Command Strips to hang it for the party and then easily removed it afterward!

Spongebob Party Food Table

The tablecloths, plates, cups, napkins, Spongebob Lollipops, and Spongebob Pinata came from Oriental Trading. The other Spongebob party favors for the goodie bags came from Party City party store. Both places had a decent selection for the Spongebob Party Theme.

I also had a dozen balloons and a “Free Balloon Day” sign. All of the kids loved picking a balloon to bring home.

Spongebob Themed Birthday Party Ideas

Lastly, we had a Spongebob Pinata filled with all sorts of tasty treats! And I do believe all of the kids had a whale of a good time!

That’s the end of our DIY Spongebob Squarepants Birthday Party! Do you have a Spongebob fan that would have loved this party? I hope that you find inspiration from ours.

There was one other idea that I totally forgot to execute and I’m kicking myself now! I had a huge furniture box that I planned to put an “Imagination” sign on and put markers inside it and let the kids have at it. I don’t know how I totally forgot about it on party day, but I know it would have been a hit.

DIY Spongebob Squarepants Birthday Party

Printable Party Decor

Free Printables for Personal Use Only in pdf format for use at your Spongebob-themed Bash:

Happy Birthday Banner

Water Bottle Labels

Free Balloon Day Sign

Bubble Buddy Bubble Labels


Here are some of Olivia’s other birthday parties through the years:

DIY Butterfly Birthday Party

Butterfly Birthday Party

Fire Hydrant and Dalmatian Birthday PartyFire Hydrant and Dalmatian Birthday Party

DIY Sofia the First Birthday Party

Sofia the First Birthday Party

DIY Little Einsteins Birthday Party

Little Einsteins Birthday Party

DIY Pinkalicious Birthday Party

Pinkalicious Birthday PartyDIY Candy Shoppe Birthday Party

Candy Shoppe Birthday Party