My glasses and plastic boxes, with screws and other things as content, I have labeled the Avery 62010 Living Household labels. Now you can see at first glance, which screw size in the glass and thanks to the transparent Ettiketten view the content well. The Ettiketten can be labeled with a permanent marker pen. I use a CD markers for labeling. You have to let the Ettiketten dry after labeling, otherwise smears the font.
The Avery 62010 Living Household labels are a good and cheap solution for labeling glass and plastic boxes, screw top jars and bottles.