Playful Plush Cat Tree with Toy Ball on Spring. For cats, a scratching post is very important to groom their nails and mark territory. The compact EBI Geneva is made of soft grey plush and has a robust scratching post wrapped with strong sisal. The platform on top provides the ultimate viewing and resting place for your cat. The scratching post features a cat house with two openings, making it ideal for both resting and playing! The fun little ball with bell attached to the spring provides even more playtime fun.