There are many suppliers of flat glass engraving blanks. These blanks will be pre-polished and many have attractive bases to display the finished product or award. The glass is suitable for cutting with a diamond, sand blasting or laser marking. If you plan on cutting crystal or glassware, start by finding the local restaurant supply distributors. These suppliers will be an inexpensive source of bar ware and other glass objects. Brand names such as Libby, Cardinal and Durant are common.