Hey, what about sorbothane layers between stainless stell washers (the interface between different materials should send a reflection of the vibrational wave back into the sorbothane for further dissipation). The place stainless steel ball-bearings at the top to couple your system to the washer-sorbothane sandwiched structure. I think ones can do this for about $8 for four sets with three layers of sorbothane. I am tring it this weekend.
Salsero
Salsero