Providing your cat with a place to play and chill is going to be much more fun with BLOCKS. You can use it to create structures by clicking various elements together. The package includes two beams, two cubes, tunnel, bridge, slide and two types of connectors, so you will have everything you need to build structures for your pets.
The developers have used cardboard as material, so this is a sustainable and durable solution. Like what you see? You can get it on Kickstarter.