I have no experience with Quail, but I think they're adorable. I wonder what they would do with an easy foraging toy? Something like a ball made for birds (or at least made for pets) of wicker, rubber or plastic, with holes or spaces in it to grab at food pieces (just make sure holes aren't the size where their head might get stuck).
Terry, do you think Quail would be interested in that? LOL at their favorite thing to do is roll around in their dish with sand in it!