I LOVE sticky flags. If you haven't seen the post it flags or used them before, you have to try them. I use them to mark the kids music and their assignment pages. I've used them on the piano for beginners to help the child not move from a certain position. For example, if the child is in Middle C Position, I would put a flag on E and then A so if they shifted out of position they would feel the post it flag. These are a music teachers best friend!