OK i always keep my change when i buy something. some of my friends thought i was cheep until i did a little social experiment with 2 of my friends and we found the my first friend gave away 5 dollars in one day. and my second friend gave 8. THAT'S ALMOST 10 BUCKS. it kills me to hear people complain that they don't have any money while there in line in front of me and then say keep the change. so what to do.
Step 1: Save It Up
Even if it is only a little change it will add up faster than you think. and yes it may be inconvenient to haul it around in your pocket but times are tough and you got to adapt, save, finagle, or what ever you need to do to get by. if it bothers you that much use exact change you will keep the leftover change with out creating a ton of extra change in case you fall off a pier you wont sink to the bottom in 2 seconds. I have an old pretzel jar in my room and when i get home i off load my small fortune in to it.
Step 2: Make It Work for You
OK i admit it i get lazy and let it get full before i turn it in. but if you have $100 in change sitting in your room in a jar make it work for you. put it in a high interest savings account or what ever you want but remember it wont gain anything sitting in your room. my bank deposits small change with out a charge check with yours.
Step 3: Things Not to Do
Don't leave them in the jar and start a new one. believe me when your have 10 jars of coins that weigh 40 pounds apiece the tellers get pissy and like i said make your money work.
Don't throw them in the friken water, i never got that. you earned this money keep it dammit.
Edit: when you turn your cash in don't do it at one of those coin star machines they charge a percentage my bank has a similar machine that does it for free. the coin star is a rip, don't give them any of YOUR cash. and
DON'T LET THEM KEEP THE CHANGE.