Money Makes the Merry-Go-Round

I never want my kids to believe that money is the only result of success, however I do want them to understand the importance of being financially responsible at an early age, so I've decided to get them these new piggy banks:




They have 4 different options for kids to choose for their money. I think this shows them that they shouldn't always SPEND every penny they get, and it gives them the control to choose where they want to apply it. Now my only dilemma is explaining investment to a three year old. I'll come up with it.... Surely.