I really like the "1$" idea instead of the change idea. But it's really weird HOW many looks I get from people when my bill is 34.84 and I count out the 84 cents in change. I mean, I'd rather count out the change, then get stuck with MORE change. In the end, everytime I go to the bank, I literally empty my wallet, I usually have anywhere from 35cents to 1.50 in change to add to my savings account. If you figure that you go to the bank 30 times a year, then you can save quite a bit.
That's my two cents!