Well my son loves Phineas and Ferb so we chose to have a Perry the Platypus birthday for him.
We welcomed guests and went straight to the food. We had hamburgers and hot dogs since the names of the places Jeremy and Candace work at, Mr. Slushy Burger and Mr. Slushy Dawg. I just found photos of the logos and printed them off. Guests enjoyed the Perry themed snacks we had: jello jigglers (mold purchased from Wal-Mart), cake pops and Swinter rice krispie treat sno-cones (from the Swinter episode) were both made by myself. Little guests also enjoyed the Perry fruit snacks and were able to take home a Pez candy of either Phineas, Ferb or Perry.
I have a very talented Father-in-law who painted all the characters on poster board that we hung around the house. The other wall hangings were purchased on ebay.
For games we played the pin the tail on Perry and then "you're so busted."
The party was a huge success and enjoyed by all!
Cake Pops, jello jigglers and Rice Krispie treats
Pez candy and goodie bag with candy, pencil, stickers and activity book
Activities / Games
Pin the tail on Perry the Platypus and You're so busted
What People Ate
Burgers, cheeseburgers, hot dogs and chips
What People Drank
Bringing out the cake
The birthday boy and his sisters and parents