Smile Dollars are personalized fantasy currency backed by the experiences of the people who use them.
Use Smile Dollars to commemorate a moment. Let's say you meet a friend for coffee or at a music concert. You have a positive experience, so at the end of the gathering, you take out two Smile Dollars. You and your friend sign and date both cards, and write or draw something to represent the experience. Each person keeps one card. You take the card home, and store it in a binder or a case. Later on, you can pull them out and remember the good times.
There are also single direction uses for Smile Dollars. Suppose you donate ten pairs of shoes to a non-profit so they can give the shoes to people who need them. Normally, the non-profit gives you a piece of paper that says you donated ten pairs of shoes, and you estimate the value of those shoes on your tax return. A problem here is that the tax code, at least in the USA, doesn't value in-kind or non-cash donations, which leads to a lack of accounting. Anything that isn't accounted is effectively treated as garbage, which isn't good. So, as an alternative, the non-profit could give you a Smile Dollar personalized to show that 10 pair of shoes had been donated. This creates accounting, which, if we are fortunate, might slow climate change. At the very least, you can look at your donation-based Smile Dollars, to see hard evidence that you are a wonderful and generous person.
What about dating? (Yeah, yeah, I know, dating is this horrible institution based on rejection and ghosting. Dating should be replaced by not-dating, which would be based on appreciation and communication.) At the end of a date, if the person you are dating did something good, s/he could be given a Smile Dollar personalized to represent that good act. If s/he collects ten Smile Dollars from you, s/he could potentially be eligible for... Or, only when s/he collects 100 Smile Dollars, since you are worth it!
What if someone does a good deed, and you want to acknowledge that good deed, but don't have the budget to pay for it in legal tender? Perhaps students at a school could receive Smile Dollars for certain good deeds. When they collect enough Smile Dollars, they could get a larger reward. Some schools already do something like this, and you can even find 100 year old examples of this on eBay.
Unlike legal tender, no one is required to give you something if you offer them a fantasy currency note. (The original intention behind Smile Dollars was to make fantasy currency notes, but so far they have become standard size, 2.5" x 3.5", trading cards, printed by a professional trading card printing company in the USA. The "gold" in the name refers to the metallic ink used on the cards.)
That said, if you or your friend becomes famous, other people may want to buy them.
The free included case is conveniently sized to carry around in your pocket, purse or bag, so you always have Smile Dollars ready to share.
So, go out there and commemorate the moments with Smile Dollars!