gas tank damper/rubber mounts?

I went last year with out one, (ok 2 months of driving time.) Has anyone figured out a alternative to the ones listed in the OEM?
is there a place online where I can get blocks of rubber? I plan on trying on making one with a dremel tool. But for 18, is not bad. These bikes are works of art these days.
You might find a rubber grommet the right size. Measure the hole in the tank tab, go to the hardware store and see if they have one to fit the hole.