Due to this story, if I am teaching basic electronics or how to use a 3d printer to kids, I "pay them for the day's work" with a new $2 bill (which you can get

Due to this story, if I am teaching basic electronics or how to use a 3d printer to kids, I "pay them for the day's work" with a new $2 bill (which you can get at any bank if you ask and wait a few days). I like them because instead of having some guy on the back they have a pretty painting of the Constitution. I sometimes to have to explain to the parents that yes it's real money.