Heh, check this out. You can actually patent pretty much anything 
http://totallyabsurd.com/archive.htm
Some good ones:
http://totallyabsurd.com/babybottomart.htm
http://totallyabsurd.com/hurricanehouse.htm
http://totallyabsurd.com/toiletlandinglight.htm
http://totallyabsurd.com/bulletproofbuttocks.htm
http://totallyabsurd.com/pantyhose3x.htm
http://totallyabsurd.com/travelrelief.htm

http://totallyabsurd.com/archive.htm
Some good ones:
http://totallyabsurd.com/babybottomart.htm
http://totallyabsurd.com/hurricanehouse.htm
http://totallyabsurd.com/toiletlandinglight.htm
http://totallyabsurd.com/bulletproofbuttocks.htm
http://totallyabsurd.com/pantyhose3x.htm
http://totallyabsurd.com/travelrelief.htm