Use some reclaimed/pallet wood and corrugated tin! These are the BEST DIY Pallet Ideas
Cat scratching tree
outdoor cat tree More
I am so going to try and make this for my cats!!!
Make a DIY scratch board for your cat in minutes with just a few materials! #PetLifeHack
Pickle Perfect: How to Build a Cat Tree More
We found the ultimate cat castle! This is a great idea to keep our indoor cats busy. Discover more pet accommodations on our site now at http://theownerbuildernetwork.co/j0ma Is this something your pampered feline would love to have?
Bookshelf to cat tree; This would be so much less expensive than the cat trees they sell at the pet stores, and the kitties would love the loftier heights!
IKEA Hack / DIY Cat Tree - Fat Cat Climber by Primal Paw: