Are you looking to trade a problem with getting the kid to eat cheese for a problem with him obsessing over Pokemon? Because after
comprehensive much some testing, Alan Turner has determined that two cheeses on opposite ends of the snootiness spectrum--Velveeta and brie--make the most attractive Pikachu-shaped hors d'oeuvres.
Personally, the kid's preference for Gruyere over string cheese has already raised some eyebrows around my mother's, so I think we'll pass on this one.
Title: Pikachu Hors d'oeuvres [well via metafilter]
The Pokemon Playdoh Set, aka the Play-Doh Pokemon Character Maker, may turn up used on Amazon. [amazon]
There's one on ebay. [amazon]