This is just lovely - DIY Cat Climbing Tree ~ Tips and how to Finish ~ I've always wanted trees in my house with the branches reaching out across my ceilings - at least in every corner in every room...
31 Brilliantly Clever Cat Hacks
DIY Cat Hacks - Cat Tree Wall Ikea Hack - Tips and Tricks Ideas for Cat Beds and Toys, Homemade Remedies for Fleas and Scratching - Do It Yourself Cat Treat Recips, Food and Gear for Your Pet - Cool Gifts for Cats http://diyjoy.com/diy-cat-hacks
Handmade sisal wall mounted cat scratching por KirstysKittyKats
Make a cat tree using real branches. See how I made this beauty for about $75!
Beauty beyond words ... I adore you !
Basic tree house structure
Ikea hack Billy cat climbing shelf (site is in Finnish)