I'm putting this in "pets" because I can SO see a wall version (well-attached) with openings in the shelves as a kitty tower!!! I guess because my cats LOVE to scratch sisal ropes, and love to lie on flat surfaces. Would be large and heavy, but very cool! Probably have to anchor to ceiling for main support, and walls for added stability. Reminds me of the bookshelf-turned-kitty-condo idea ...
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DIY Pirate Rope Mirror DIY Mirror DIY Home DIY Decor