Just a reminder that it is traction time again and many tire outlets sell bags of sand. Most are small enough to be easily aranged in the base of your lathe stand for steadiness and to dampen vibration, the latter property being one of the prime reasons for using sand as weight.
Here in the NW, Les Schwab tire dealers sells a 70# bag for $6.00. I bought three today for the bed of my Ford Ranger - haven't needed to use it in ice and snow before this winter.