Our 8 year old son's "Pokemon" Birthday Party: I decorated a cake with his favorite Pokemon character and "goodie bags" were large plastic "snap-together" Christmas ornaments from the local craft store. We painted one half of the round ornament red and left the other side clear.  When it was snapped back together it looked like a "Pokemon Ball". We filled it with candy, Pokemon stickers, plastic Pokemon characters and tattoos.  The bowling, cake, ice cream etc was forgotten!  The Poke Balls were a hit!!!!