On the Japanese American Museum page I found a bunch of fun classes that are held this September. The "Harajuku Toy Fashion and Decoden Workshop" is based on participants learning how to make old toys into fashionable accessories. Another class offered is called "Edible Adventures: Graze Little Tokyo." In this class you get to hear stories of the neighborhood past and sample different foods.
Here is their website:
http://www.janm.org/events/lifelong/