This puzzle box is a great cat toy, it's cheap, easy to make, and what's more, your cat's will play with it for hours.
All you have to do is get a closed cardboard box, about the size of a shoe box, then cut some shaped holes in the top or sides, i.e. a circle, a square, a triangle and a diamond. Then you place some of your cat's favourite small toys in the box, like a catnip mouse, shoe lace, small ball, etc. Your cat will then have hours of enjoyment whilst trying to get the toys out of the box.