Oh man I didn't even consider the big guys, that's even cuter somehow.
As for the poop/pee, he tends to go in the same corner, and I picked rodent and sugar glider gear because it's washable - I assume rodents go to the bathroom on their things too. I'm hoping to get him into a taller tub with climbing opportunities soon, and since most of this stuff is meant to be suspended it'll be even safer up off the ground I think (once it's modified to take his weight of course - I don't know much about sugar gliders but something tells me they generally aren't pushing 450g). Then he can chill in his hammocks and things. I just didn't want to change things up on him too much right now - maybe once it's warm out and he's eating again (hopefully!).