debatable as to how cool they are, but I have to mention the Scott-Pedersen SE (Self Energizing) cantis...if only cause I still have a bag of them that I never did sell.

Shameless plug, but if these float anyone's boat, I'll let 'em go for a song.
http://s179.photobucket.com/user/unw...l?sort=3&o=103
http://i55.photobucket.com/albums/g1...s/IMG_2583.jpg