When you put on your MagicBand, check to make sure that it is fastened properly. Check again periodically throughout the day, including when you get on or off of a ride. I’ve had MagicBands fall off twice. Fortunately, I got both of them back, but now I check mine constantly. The other day, I found two MagicBands on the ground. I turned both in to Cast Members. If you find a MagicBand, that’s what you should do as well.