We just had a Pokemon party for our 3 year old.  I modified and used alot of ideas I found here: Bingo, pokeball cupcakes... For the invitations I scanned a picture of Pickachu into the computer and scanned in a photo of Ryan.  Then I put Ryan's head on Pickachu's body.  Underneath I wrote "Ryanchu". I wrote out all the party info of the back.  It was cute.    Another game we played in addition to Pickachu, pickachu, charmader and pin the bulb on bulbasuar was a pokemon scavenger hunt.  I made three paper pokeballs for each child.  On the back of each I put a pokemon sticker in groups of threes. Then I hid them all around the yard. The kids had to find 3 matching pokemon to win a prize. Trading was allowed and encouraged.  They had a ball.  Everyone had a great time.