Hi Ginevive,
Aaron is a really cool guy. I bought a few tincs from him about a year ago so deffinetly stop by his place for not only the fruit flies but also to have a look around. I've been ordering crickets from a place called Salph's Cricket Ranch for over 5 years now, their number is 1-800-238-7322 I think the smallest quantity that they will ship is 500 but honestly 500 pin-heads will go fast. The little wood frogs might be able to take 1/16 inch crickets and the 1/16 crickets usually do better during shipping so you don't loose any.
Besides fruit flies and crickets you might also want to go out and collect piles of leaf compost that are full of tiny springtails and other invertabrates. You can either place chunks of leaf compost directly into the cage or you can put the leaf compost into a sifter, put the sifter over a small container, place a lightbulb over the leaves that are in the sifter and most of the tiny insects will crawl out of the bottom of the sifter to escape the heat. You can then feed these little bugs to your frogs. Keep us updated about how they are doing, good luck
-----
Devin
devin@amphibiancare.com
www.amphibiancare.com