We here in the Los Angeles area used all those things and more as our tokens in hopscotch, key chains, keys, coins (not so much as they were hard to pick up), stones, skate key, etc., but the encompassing term when used in the game was 'lagger'.

I see that Louie Roy, who is some years older than I if he was playing Hopscotch in the '30s, uses the term 'to lag with'. Maybe the term is remembered by (some) old folks, but fell out of usage later.