Yeah, I think the only, and cheapest, thing I got at the Ghibli Museum was a deck of playing cards that were Princess Mononoke theme'd. Everything else was too expensive for how much money I (didn't) have.
Ugh yes, Pokemon Centre is awesome. They even play the theme tune in the store, and use the healing pokemon sound for store announcements. It is awesome.
*_* OMG Pokemon Center.