I thought that it would be cool if the kids could see exactly how quickly change adds up. So instead of me buying the traditional piggy banks I bought them each an electronic bank by Zillions. This electronic money counting jar bank is a great way for showing them just how quickly change adds up! For us adults who just are curious as to how are "vacation fund" is adding up this is handy to. I just like knowing how much is there before I take it to the bank and this is a perfect way. It is also a space saver an 4.13x4 and 13x6.5" so space should not be an issue. You just easily slip your coins in the slot on the top of the bank and simply watch your total grow higher and higher on the LCD display. It is powered by 2 AA batteries that are sold sepereately. I am really gald that I have bought these for the kids and they are having such a great time with them they are always on the hunt for extra change! The perfect way for them to do extra chores and earn a little extra jingle!