I was a skelly adict. In Starett City, Brooklyn in the late 70s, clay was the only choice. I remember using milk tops with wax, but I could never be competitive. It would end up rolling down the sidewalk. Clay was great because you could swirl the color. I would eat a Push-Up every week to get a new top. It was embarrassing to use anything put a push-up top with clay. please include clay in the survey!

The only downside was worn out fingernails. I tried to alternate between two fingers to spread the wear-n-tear.

We usually played on chalk boards, unless someone had the courage to spraypaint one. The painted ones would usually be cleaned away, and the dimensions were usually off.