DIY top loading cat litter boxes plastic storage containers with lids feet of grey stair-tread carpet -carpet adhesive double stick tape. I like this idea, but i don't think my older cat would be able to jump out
Repurposed Crib Dog Crate
How clever is this repurposed crib turned into a dog crate from My Love 2 Create.
"Dog house" is actually hidden access to a doggie door, providing visual & physical security against intruders. Could also protect dog door against weather! Not that we have a doggie door, but good idea!
I don't have a cat but this may make me reconsider. Sunni has one with a hinge on the cat door for easy emptying #CatLitter
Dog Door Cabinet - For those who have outdoor dogs but also want to give the dog relief from the elements but not access to the whole house. Install a doggy door into the back of a cabinet. Attach a lock to the cabinet doors.