I am going to go thru my home setup for cat shelves, I will also critique some of the ones the sell online.
Shelves & Cube Storage Organizers | Lack Wall Shelf Unit, White, 11 3
However, some experienced issues with the provided wall anchors and screws, requiring replacement hardware for secure installation. While the quality is generally considered good, some pieces were reported as less durable than others, particularly the smaller platforms.

Explore a wide selection of vertical cat trees featuring multiple tiers, soft platforms, and engaging play elements for your feline.
Wall Mounted Cat Scratching Post with Multi Level Cat Shelves.Crafted with solid pine wood and a double layer of linen, Scurrtys cat wall shelf is an elegant and natural perch for your cat. The hammock is completely odorless and non-toxic which is great for sensitive felines.

Hexagon cat shelves, Cat condo, climbing wall, wall steps, tree natural wood...
Wall Mounted Cat Climbing Shelves with Sisal Cat Scratching Post Corner Perches Cats Bridge and.Cat Window Perch, Cat Hammock, Cat Window Bed, Wood Cat Shelves, Minimalistic Pet Furniture - Etsy.

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