My sister Cecile uses wineglass charms. This way, you know which one is your glass and you don’t have to keep getting a new one every time you need a drink. Ideal Bite says it takes about 2 full glasses of water to clean a dirty one. To save on paper napkins, use cloth napkins. And to save on water to launder the cloths, use napkin rings and keep the same one for the next meal. For place cards, buffet markers or napkin rings, Urban napkin rings are rewritable with dry erase markers.