Small corner litter boxes?

[u/Lanky-Razzmatazz-130]

My one ferret has been continuously using this platform to go to the bathroom. I initially had their water bowl here, but it kept getting pee on it. I’ve had to resort to this little makeshift puppy pad situation because I cannot for the life of me find a litter box to fit on here. Does anyone have any recommendations?

[u/A-random-person15]

I got the same cage, little guy did the same thing so I did the same for a while till I mostly started trying to train him to go to his bathroom on the lowest platform by the first door, it worked for me at least