I grew up in Richmond Hill NY, playing skelly every day, come summer time in Smokey Park in the early 70’s. I remember using crayons and the rim of the glass beer bottle to make a skelly cap, but there was one more way of doing it that was my favorite. We’d take a twist off beer cap, find a plastic soda cap, and some small pieces of glass for weight. I’d dig the plastic insert piece out of the soda cap. The glass went inside the beer bottle cap and the plastic piece was fitted in side the beer bottle cap, over the glass upside down, to hold the glass in place.I remember always giving the new cap a real good rubbing on the ground to roughen it up. I was a good shooter and didnt want it flying anywhere I didnt want it to. I have taught my kids how to play all the street games I can still remember. Their favorites are: I Declare War, Box Ball, Chinese Hand Ball and Stoop ball and Red Rover.