I needed a self feeder for my cat, so he would stop waking me up. After looking around on the Net (and instructables) I did find one that I based this feeder on, ...
Outdoor Music Station: Xylophones Wind Chimes by OwensAdventures
how cool is this musical/sensory bamboo structure from Sounds and Senses?! You walk through the hanging bamboo, creating random music as you go. I LOVE it!
Indoor / Outdoor Ball Tower
Cement, balloons, paint and candles! Awesome idea and I love the look of it.
a handmade rope swing
Backyard Treehouse | 15 Awesome Treehouse Ideas For You And the Kids!
For the play structure, probably not the wall
Curve Cat Bed by Akemi Tanaka
Cat heaven! @Sian Lewis To (@Aleksandra Jany) your cats need this in their lives!!