Saw the pin earlier about cutting glass, but I'm sold using old bottles. If I can only find the pin again. make glass sets from old bottles, using a glass cutting technique with yarn, nail polish remover and a flame!
Bathroom glasses Glass Jar Typography - tape the paper inside and then trace with glass paint pen. Would be cool to put names on mason jars to use as cups glasses for a party or at home so ppl can reuse their cups all day.
DIY liquor bottle candle (Soak yarn in nail polish remover. Tie it around the bottle @ the breaking point. Let it burn for 30 sec. rotating constantly, then dip into ice water. It'll break where the yarn was tied)