Plastic razor blades
These look like old fashioned safety razor blades, but they’re made of plastic and you can’t shave with them. You can’t cut paper with them, either. But they excel as scrapers. Put one into the included handle and you can cleanly remove labels and stickers stuck to almost any surface (add a bit of Goo Gone to speed up the process, if you wish). I used one to clean the labels off a cigar box for a project I recently made. — MF