Spikes and hardwood floors.....what to do?

Many speakers have spikes that are thinking "carpet with plywood below it"...fine, but what about those of us with hardwood floors? What have you found to be good solutions? This is for the Acoustic Zen Adagios.
I used the superspikes on an older pair of Energy C-4 speakers with great results. Fine product, easy to use, not bad looking either.
There is a guy on *bay site that I have dealt with. Just do search in home audio/speakers/spikes. He sells just the little discs for the spikes to set in. Different finishes/plating as wel. I like the black chrome.