Suggestions for filling speakers stands?


I am using some very good bookshelf speakers, and want to get the best sound out of em w/stands....and I was
wondering if anyone had some advice on what is the best way
to fill speaker stands for sonic conciderations?
I hear differing theories and views on this subject and am not certain on which way to go...Leadshot?...Sand?...combinations w/resin?..etc?...
....I've heard some say non vibrating or shifting fill is best for heat dissipation effects and so forth. But have also heard that solid resin filled stands are the way to go from others. Any input/advice?
zexxtool
Jonny Cat unscented kitty litter. Its cheap and available at your local supermarket. It isnt as heavy as lead shot or sand, though, if you need to add weight to the stands.
Steel shot. Check yellow pages for Industrial Abrasives Suppliers. Inexpensive & doesn't hold moisture like sand. CHILDREN SHOULD NOT BE EXPOSED TO LEAD PRODUCTS!