Modern Cat Condo by TheHeftyCatCondo on Etsy
stagger small shelves back and forth across a corner for a cat ladder. much cheaper and not as tacky. Install next to stove!
A #treehouse for your cat! Genius! Feline Design - DIY for Cat Homes
Katzenbaum war gestern Catframe - das exklusive Katzenmöbel - Idee
This Tree Was Just An Eyesore In The Yard. Wait Until You See It In The Living Room http://www.wimp.com/cat-tree/
cat tower - love the simplicity
inexpensive cat furniture - Google Search
homemade cat tree - Google Search
Renovation on diy cat tower
Sisal Cat Tree by CatastrophiCreations on Etsy: looks like it's built on plumbing parts.