this one time my little brother and I were doing a lemonade stand, like little kids do, and one of our customers jogged across a parking lot to get to us, gave us $5 for 25c lemonade, and told us to keep the change. Kudos to random jogger guy who made our entire day. If you get lemonade from little kids, let them keep the change, or tip them. It’s a really cheap way to make someone’s day. 10 cents is awesome when you’re a little kid and anything up from there is more awesome.