Here is a couch on a boat; a sofa boat. It is for couch potatoes that like boating? ??? ;D
http://www.gizmag.com/electric-sofa-boat/14478/ (http://www.gizmag.com/electric-sofa-boat/14478/)
(http://www.gizmag.com/pictures/hero/sofa-boat.jpg)
At USD 16,060, not a cheap couch potato cruise. 8)