What about making a Pokemon ball (the half white, half red one) pi?ata from a balloon and paper mache. Fill with candy and dollar store items. I bought Pokemon cake “decal” (place on top of iced cake), pencils, pens, paper clips and stationary set (pencil case with eraser and ruler inside) all at the dollar store. What about pin the lightning bolt tail on the Pikachu (right character ?) made from a picture blown up on a photocopier.
Could each child be assigned a particular Pokemon character when they arrive at the party and must act like them throughout the party (or some other better variation of this take-on-the-personna of a Pokemon character idea). Make a game of trying to draw your favourite Pokemon character in the dark (or blindfolded) – see what new characters are invented.
That’s all I can think of off hand. I’m sure other members have more creative ideas for you to try.