Hi Dan,
You can probably buy trout or salmon in the meat department of any super market in Spokane. Just freeze them as soon as possible. If you want to get away from feeding fish, you could feed that little fitchi worms, pinkies, fuzzies, or even raw meat, but it might need to be scented first. I'm not a fan of feeding amphibians but many people do. Here's a link that explains why I don't.
new snake owner says hello
I recently read a post on this forum where someone was feeding canned cat food to their garter. Now that's a cool idea. I primarily feed mine raw caribou meat, so you see, they'll eat just about anything with a little conditioning.
By the way, I edited my last comment, so you may want to re-read it.