I introduce you to the ultimate toilet paper hideout: The Hide n' Clean!
Jokes aside. I made this model after my wife requested a good looking toilet paper dispenser. As I couldn't find any models I liked, I made this one myself. You can insert your toilet paper rolls from one side and then turn it around, so the toilet paper is hidden from plain sight. I recommend a maximum diameter for the rolls of 19.5cm (the box itself is 20cm). Should be fine for most rolls.
I would recommend using supports for printing this, but it could also print fine without supports (didn't try, but the overhangs are not too large).
Happy printing!