We had a lot of fun at my daughter's 7th birthday party. We had a SpongeBob party and I made all of the prizes and games.
Here is the cake I made. SpongeBob's house:
Our first game was a Krabby Patty Cook-Off. I made fry cook hats and all of the fixings to make Krabby Patties out of felt. The kids had to gather all of the ingredients and then assemble their Krabby Patty. The person who finished first won a spatula and everyone got Krabby Patty Cook-Off ribbons.
Next we played pin the tail on Sandy. Instead of buying 20 goody bags I made them myself. I used lunch bags and folded the edge down two times. I bought some raffia for $2.00 and cut it apart to form the handles. I hot glued the handles to the inside of the bag. I printed out some pictures of Sandy on sheets of sticky paper and cut them out and stuck them on the bags. I filled them with SpongeBob sticker, Spongebob gummy fruit, bubble gum and jelly beans.
Next we went Jellyfishing. I used pink balloons with streamers hanging down. The kids had to use a racket and hit the jellyfish across the finish line. I made stuffed jellyfish as prizes.
Here is a tutorial for the jellyfish:http://www.craftster.org/forum/index.php?topic=179725.msg1866249#msg1866249
Then the kids went to Mrs. Puffs boating school and had to drive their boat mobile around an obstacle course.
When they made it around the whole course the got their boating license. I laminated the licenses to make them look real.
Here is the invitation I made: