My mother cleaned out her storage and gave me a box of what I remember to be “Chinese Jacks”. They are the little plastic rings that are snapped together around one ring right?!! My daughter made a belt and brought it over to me. I saw them and about fell over. I remember being so obsessed with these things and we used to play a game resembling jacks. I would love to find out more and teach my 5 year old daughter and maybe it would be the big craze at school again this year!