Cardboard Cat Chaise - Evil Mad Scientist Laboratories
http://www.evilmadscientist.com/article.php/catchaise
"Although we don't claim to understand it, a cat that has installed itself in a cardboard box is a happy cat. You can exploit this mysterious fact to make a your own simple corrugated cardboard cat bed like this one, designed as a kitty-sized chaise lounge. Since it's just cardboard, it's also easy to modify this basic design to suit your own (or your cat's) taste. "
Just give up and use cardboard - Warpspire
http://warpspire.com/tipsresources/personal/just-give-up-and-use-cardboard