I admit I like to mix up the diet a little because in the wild cornsnakes eat varying things. I have thought about starting an anole colony so I could have clean ones, and if I ever have the space I may well do so. I figure if I go thru a couple generations and deworm every generation, I should eventually have parasite-free anoles. Besides, I always wanted anoles as a kid, so now I could have them! In the meantime, I use suitably sized subadult rats as a once-in-a-while meal, and also chicks for the big corns who can handle that size meal. Nobody (so far!) has refused mice. If I ever get back into the fancy rodent community & had access to culled hamsters or gerbils, I'd consider them too (p/k or f/t of course).
Edit: I may look for a source of quail eggs. That looks like it would be fun to watch as well as fun for the snake. and the shells should provide lots of calcium so it might actually be a little bit beneficial, as opposed to just satisfying my desire to provide nutritional variety. I've also considered, if I ever have a mouse colony, keeping Peromyscus (deer mice) because although WC Peromyscus would be parasite-laden, it should be possible to raise up a colony of clean ones. I know someone who did research on them, and their lab had a colony, and they were as free of parasites as M. mus. domesticus.