or, use your nipples 

  Tehn not only could you bench, but you could sell your pics to all the gay mags and have a side income 
 
Sidewinder Computers has some "radiator feet" that are pretty cheap, you might want to look into those.  Last time I had my gamer on the Banchetto I had one feser quad sitting on the floor using a lamp base as a foot - worked great 
