More to explore:
Haha! So cute!!
Cardboard cat house
Cardboard Cat House
Make a mini camper playhouse for your little ones out of a few cardboard boxes!
Cat tree made from cardboard boxes. Too cute!
how innovative! A cardboard house, complete with cardboard furniture!
Cardboard tube cats
Modern Cardboard Cat Scratching Tower
DIY PROJECT: RECYCLED CARDBOARD KITTY PAD
Our cat has a homemade cardboard condo. - Imgur
Krabhuis: A Cardboard House for Cats
Cat Tree tutorial