I was a child during the 1970's and Chinese Jacks were one of my favorite games to play. Small plastic rings looped together to form a little cluster. Chinese Jacks or Jax, were sold at every toy store, grocery store, and corner drug store across America. Not so today.
I did find a set on Amazon for $25.00. That makes me chuckle, since I can remember them being sold for a dollar. Never fear, here is an Instructable to give this simple, but addictive, game a come back.