I was taking some pictures of the appliances the previous owners left here so I could post them to Craigslist... and I found 4 trays. They're about 8x8 inches and the 'wells' are small enough to hold a quail egg. I wonder if that's what they're really for? They were in the freezer, do they make half round ice cube trays? Either way, I figured these might work for an incubator? Any ideas?