More to explore:
Cat Playhouse - Lowe's Creative Ideas
Cat playhouse made out of an old T-shirt and 2 hangers
Cool Star Trek cat playhouse!!!
Creative Dollar: Cheap DIY Kitty Playhouses and Beds
I want to do this one day for my cat.
cat tower DIY
DIY Cat tree
Fletcher would love this!! Turn an old cabinet into a private kitty playhouse (especially for families with dogs for private area). Cover in carpet and place sleeping and jumping areas. - this kind of looks like a tardis to me...
DIY or Buy: Dog Tie and Collar. For more pet DIY gift ideas go...
Lets Do it! Amazing DIY Pet Projects ,Cat Teepee