Lately I've discovered a fun 3rd party book by Mongoose from their encyclopedia arcane series about crossbreeding in strange magical ways, making stuff in the same manner as the owlbear, and using it I've created a few hybrids involving goblins, one involving orcs, and one involving trolls. Would this be a good place to put them? They're fairly minor but I enjoy them nonetheless, and they seem to fit the criteria of this thread.