you can buy these at Petco or Petsmart.
Vitakraft Mini-Pop Small Animal Treats at PETCO
I've got them for Toby, but I've never tried popping them. The package says you can microwave them to pop the kernels. I guess if you've got a diabetes prone or diabetic hamster you can just give a tiny bit of the corn by plucking some kernels off the dried cob and pop them in a bowl so you can keep the rest for a long time
