I am finishing a build on new quail cages in my shed coop (check the coop page connected to my profile if you would like more detail). I need something to put under my cages to collect dropping from the quail. I have 3 cages inside the shed and 1 that is portable (outside the shed and inside the garage during winter). Each cage has a footprint of roughly 3'x8'. about 2' is a huddle box, so I don't need a tray under that portion, but the remaining 3'x6' section needs some sort of tray. I am open to putting multiple trays next to each other, but I'm not wanting to spend a ton of money of baking sheets or something like that... Any ideas?