Cats are so low-maintenance you'll have all the time in the world for "pet projects" to give to your feline friends at home. Check out these DIY cat accessories sourced from around the Web:
Recycled cardboard scratch pad.
Cats, famously, are fond of sleeping in cardboard boxes. They'll be glad to have a scratch pad made of cardboard, too. Using some spare cardboard in your home, make a roll of cardboard a few inches high and about one and a half feet in circumference.
A cat tent.
Ever played in blanket forts as a kid? This project's the equivalent for cats -- but instead of a fort made out of blankets, it’s a cat-sized tent made out of a t-shirt. It’s super easy: with only a large t-shirt, a wire hanger, a piece of cardboard, and some tape and safety pins, you can have your cat "play house" inside your house. Get the instructions on instructables.com.
Covered cat litter.
A cat lover who's also a wine lover will now find some use for wine crates lying around the house. Using two wooden wine crates, make a simple, covered cat litter, as such. Get the instructions on apartmenttherapy.com.
Cat obstacle course.
Saw out an alternating series of squares from the shelves of a tall, narrow bookshelf to make an obstacle course for your cat. Get the instructions on ikeahackers.net.
Double decker bed with scratching post.
All you need are a single shelving unit, sisal rope, and some cushions, rugs, or old clothes that you can repurpose into a cat bed. Simply tie some sisal rope to cover one side of the shelf; place one cushion inside and one on top. (Source: ikeahackers.net)