Has anyone done the money jars?

I'm not sure what you mean by the money jars either. I throw loose coins in a jar and roll the coins from time to time and deposit them. When I do that, I always allocate them to something like paying extra on my mortgage or car loan.

What do you mean by a money jar? You mean a physical jar like a piggy bank? Lol. Well, I just throw all my loose change into this Ferrero Rochet container and every once in awhile I treat myself to a Pizza or something. Also comes in handy when I need to get a cab and realise that I need to draw money. lol