the only thing that I remember as a child is....see a penny pick it up, all day long you'll have good luck but I wonder if it only applies to finding it on heads. we save our change too GL. we keep it in any empty 5 gallon water jug. we cash it in for special events and have had some decent spending money.
We lived in NYC for a while and went back for a visit. while walking around I couldn't figure out why my back was hurting me so. my daughter carried my purse for a while and kept telling me how heavy it felt. the next day I decided to cash in the change and had 76 dollars worth of change! now I empty my change out weekly.