It's fun to make a treat together in yoga kids classes. I found this fantastic idea on Blonde Designs:
http://blonde-designs.squarespace.com/blonde-designs-blog/2009/11/20/blessings-mix.html
Some of the things in it aren't the healthiest (Bugles...), but I like to teach nutrition with the idea of everything in moderation!
I can't wait to make some!