pads for speakers on stands?

I have my Studio-20s on stands.  The stands have spikes for supporting the speakers, and plastic cups that mate with the spikes.   I don't like this.  The speakers have already been knocked off the supports once and the underside got scratched by the spikes.  Are there any good, soft  isolation pads I can use instead?
I've done a brief internet search but, haven't found what I'm looking for.

Thx