Lead shots for speaker stand.

As an alternative to lead shot you might want to consider steel shot. Very inexpensive from industrial abrasives suppliers (~$20/50# bag). Available in sizes (grit) from course powder to ~ #6/7.

Much more enviromentally friendly if you dispose of it later and not a poison risk for children and pets.

As long as we're talking alternatives, and assuming you're looking to damp the ringing of metal stands and are not necessarily interested in making the stands heavier, try kitty litter. Real cheap experiment. Go to your local supermarket and pay $1.99 for a bag of Jonny Cat unscented kitty litter. Should be enough for one set of stands. Try it. If it doesn't do the job, you're out $2 plus sales tax.

If you are interested in adding weight to the stands, lead shot or sand would be better.

Try sand instead(you can get it in Home Depot for a few dollars). I try leadshot before and they sound very bad.

Some use Johnny Cat regular cat litter.

Jim, I had only two choices of small shot the day I was at the gun store. I picked the smaller because I felt they would pack closer together and there would be less chance of vibration or ringing. The #6 looked to me like it was big enough to get too many spaces. I am flying by the seat of my pants here when I make choices like that, so don't rely too much on how I do it. Seemed to work though.............Bob