I remember using those when I first joined a spa, probably 25 years ago, right out of high school. What a joke they were, but they felt good.

One piece of equipment I loved there was a spoked wheel thingie that you could sort of sit on so the spokes massaged your butt, or you could lay on the floor and put your feet on. That was wonderful. If they still made those I would buy one just for my feet.