Litter boxes are the one bad thing about having a cat, but these 2 different hidden DIY cat litter boxes are a definite improvement. They’re based on modifications of Ikea furniture, so they’re pretty simple and they can double as a low table or bench.
The first project uses a Besta shelving unit, which was also used for this DIY bunny hutch. For the hidden litter box, they cut a doorway through the inner divider and applied contact paper to the inner compartment for easy clean-up. I think I might put something more durable like metal sheeting.
The second project uses a bench no longer sold by Ikea, but the Stuva bench looks like it would work. Instead of a door, there is a drawer to keep everything hidden and tidy. You’ll have to cut an opening through the bench and the drawer. And I think I’d also line the drawer with metal sheeting.