What can people do with glass? We use it to make windows, mirrors, bottles, jars, tableware, tables, covers for watch faces, and more — including, of course, beads. Two distinct items can even be referred to as “glasses” — namely, the vision aid and any cup made from the material. Glass is practical for all of these uses because it is a hardy material in its final form, but can be formed into all kinds of shapes during its creation.