I’ve seen rock stacks along the California coast, especially at Surfer’s Point in Ventura, and along hiking trails. I never realiazed that stacking rocks is actually a Buddhist meditation. I always assumed it was artwork, which I suppose it could be looked at in the same way. Art is after all, a focused meditation.
Collect rocks with smooth surfaces and stack them carefully, making a wish or prayer while doing so. Letting the rocks fall is bad luck…so you have to be very, very careful. Best of luck!