S&H Trading Stamps (GreenStamps)- I remember Mama collecting these when we got groceries. We licked them and would put them in a book then trade them in for different items. Our fave was the gold brand; they had better stuff.
and early skates. Mine were orange and you would strap these over your shoes. You needed the metal key to adjust the length and width to your shoes ["I've got a brand new pair of roller skates, you've got a brand new key"]