For western hognose snakes you can try lizards as well which, living in NW Florida myself, are relativity easy to get at a lot of parking lots that border woodlands so long as it is sunny enough outside to warm the cement. Westerns have a much broader natural diet than easterns and southerns so there are more options than toads. So luckily you won't have to wait until a rain to bring them out of their burrows if you don't want to.