9. Cardboard Cat Scratcher and Lounge
Feline friends love cardboard, and this project channels that affinity into a stylish piece of pet furniture. By cutting dozens of long, identical strips of corrugated cardboard and gluing them together flat, you can create a dense, durable scratching block. To make it even more appealing, design it in a sleek, ergonomic wave or infinity shape that contours to a cat’s body, serving as both a scratching post and a cozy lounge bed. The vertical orientation of the exposed corrugation provides the perfect texture for cats to groom their claws, saving your sofas while adding a minimalist, sculptural pet accessory to your living room.