We all receive change if we are using cash daily. At the end of the day throw all your change in a jar to save for next year's gasoline when you go on vacation. I saved over $1000 in a year
You can also save all of your state quarters only. We have been doing this for 4 years and have over $1000 in state quarters saved, we are saving them for when we retire in 5 years and hope to have enough to take a trip to visit family with them.