The rest of this answer doesn't fit the Poetry category so much as Crafts & Hobbies, but there's a website that can tell you exactly what your coins are worth - at least for US and Canadian coins, it can tell you what their metal content is worth, that is:
http://www.coinflation.com
In some cases, as with some older US and Canadian pennies and nickels, these coins are worth two or even three times their face value! Hopefully, at least those coins can still clink and sing!
On the flip side, there's always this ... a reminder that where governments are involved, billy goats always seem to drop by:
It now costs more to make a penny that it is worth. Soon - the new pennies - will look like the steel pennies in WW II. I love the huge silver dollar - it used to be the sign of a gambling trip to Reno - a long time ago - before they switched to those gaudy chip things. The delightful Susan B's - about the size of a quarter - how many times did I almost give out two (2) to buy a newspaper? ♥
A penny used to be enough to satisfy my sweet tooth. I could bye 10 pieces of candy for a penny, and if I only wanted 5, I would get back either five 1 mil coins, or one five mil coin. A mil was 1/10th of a cent, and was originally intended for tax purposes when sales tax was slight. Mils were metal to start with with, then changed to red, green and blue plastic coins before being phased out. I could go to the movie with a quarter, and get in, get a bag of popcorn, get a box of MilkDuds, a soft drink, and go home with a nickel, unless I bought a 6 inch sour pickle. Now you need a major credit card and 3 forms of I.D. to go to the consession counter at the theater. Besides, you would need a wheelbarrow if you paid using coins.
I love coins, all kinds. My Father was a Numismatist. When I was a young girl my Father would bring home a $25.00 bag of pennies. We would spread them on the dining room table. We would look for Wheaties and old dated coins. It was fun. I still collect all kinds of coins today. People actually throw pennies in the streets . I pick them up all the time. Good poem too, It gave me a nice memory. Thanks Elaine.