I used to love to collect change as a kid. My grandfather had what seemed to me at the time, an enormous jar of change that he kept on top of his dresser. He was very diligent about adding his spare change to that jar every day as part of his routine when he would come home from work. Then when the jar would become full, I would help him roll the coins into paper coin organizers that we would eventually take to the bank and exchange for bills. Participating in this process first hand really helped me realize how much can be accumulated over time just through saving spare change.