<prompt> Human: Last month I cashed in on an experiment I started 5 years ago. I read about this idea to save a 5 dollar bill every time you had one on yourself. So I decided to give it a shot and start in August 2012. I never created change with a fiver on purpose nor went out of my way to exchange bills. I just set aside a bill when I came home from work or a night out, slowly adding to the pile and never withdrew. Considering I seldom use cash I was curious to see how much would be saved over this period of time. It ended being a bit more than I expected with the final amount of 2285. Not too shabby, might have to start this again sometime. Anyways thought I might share this idea here, not sure if it belonged in rfrugal or not so I apologize in advance if it does. Its a neat little experiment to save money you dont miss.Edit: I should add this wasnt meant to be a primary source for savings. I just wanted to see how much liquid Id amass over the 5 years. I have separate accounts for my personal finances.  <response>: I did this as well! Its a great mental trick to save a little by if you are super bad at itas I was.I would get so excited when I got a 5 I could put in our piggy bank. Had about 600 after about a year, which worked out great for an emergency fund when we needed it! And I know thats not the best ways to do it, but it helped me kickstart learning how to save 