Check out this fun series of building block cat sculptures from Hong-Kong-based company JEKCA, who makes single-stud bricks which are similar to LEGO. They are purr-fect.
These sculptures are fun for cat lovers. They are available as kits, and they come in various colors and positions. They each vary in size, but the walking ones are about 16″ long, and the sitting ones are about 11″ tall. The kits cost between $67 to $88(USD).
I’m guessing that your real cats will bat at them until they fall apart, so maybe these are best for those who want cats, but don’t have one yet. They’re also perfect if you are allergic to cats, or don’t want to deal with cleaning out a litter box.