Speakers on speaker stands-isolation ideas?


I have some mid sized book shelf speakers that I use on 24” high speaker stands. I’m looking for sway to best isolate the speaker and or stand from vibrations.

The current speaker stands are filled with play sand and I have blue tack underneath the speaker holding them on the stands. The stands are located on an upstairs bonus room with carpet and foam padding underneath. 

Anyone recommend some ideas for better isolation for this kind of setup?
todd1010
amg56
I had to look up Sorbothane on the net. I've never heard of it before. It could be marketed in Aust. under a different product name.

That’s odd. Sorbothane has been part of the audiophile vocabulary for what, gotta be 30 years. Has Aussie land been cut off from communications?  😀 In my opinion Sorbothane is probably best relegated to its original intended use as shoe insoles.
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I know we're talking sound here, but I have to again mention safety.  A painter knocked over one of my Opera Callas monitors held to the stand with Blu-Tak.  I was able to grab the unit by the speaker and the stand and speaker stayed together as one.  Of course my dog happened to be laying exactly under the speaker and would have been injured on killed had the speaker not been secured to the stand.  Keep that in mind.  As a bonus, it may yield the best sound as well.  
http://www.primacoustic.com/recoils/
These cost me around $100 each. They are without a doubt one of the best and most cost effective additions to my system. I even have one of these sitting under my REL Sub to great effect.