I just got the little gum eraser from CTMH and I love it! I still haven't used it to erase pencil marks yet but it does so much more. It took the hard to remove sticky off my scissors. It prepped my stamps to make them ink better. But most of all, if I Cricut some letters and run them through the Xyron sticker maker, it picks up all the residual sticky from them which is my favorite use for it!