“I tried to figure out how to make it work where it would hold the weight of change and be fully functional,” Rachel Lewis said.

If you're trying to build up your savings, you may be wondering where it's best to stash your cash – in a piggy bank or in a savings account.

Wealth starts with a goal, discipline, and saving a dollar at a time. Call it the piggy bank strategy. There are lessons in that time-honored coin-savings container. Any seemingly gargantuan task ...