Litter boxes aren't typically design elements in home decor. This smart and stylish solution, however, hides the box in plain sight — and looks great, too! Gather a basic side table, some twisted j (Table Top Cover)
Cat door in the wall to your garage - litter box on the garage side. No more stinky litter box in the house! * not so sure it would work smell wise as afterall the entrance is in the house. Pretty neat though so the tray isn't an eyesore in the house.
Litter box in garage such a good idea! One commenter noted a potential problem with the car exhaust in the garage and the cat door--whether it would be sufficient to keep it out. But we had a cat door in our old house to the garage and never had an issue.