Kallax cat scratching furniture ~ modified cabinet from IKEA's Kallax line (formerly Expedit) ~ sisal rope wrap & climbing wall for claws, cubby for hiding, toy/supply storage below | from IKEA Hackers
DIY cat stratching tree // Katzen Kratzbaum Birke selbst gemacht
homemade+cat+toys+cardboard+house | feel like i should apologize to non cat people for all the cat ...
DIY cat scratch box - recycled cardboard cut to fit into cardboard box that could be covered to look nicer
Katzenturm aus Karton
Sisal Cat Tree by CatastrophiCreations on Etsy
Ladder cat tower scratching post More
I always joke about using my architecture degree to design cat furniture. But it's becoming less of a joke.
Best one I have found --- How To Repair Cat Scratches On Leather (Thanks a lot Lily because of you I need this pin!)