Card Wine Glass Tags. One way to recycle an incomplete deck of cards! Maybe you could laminate them :) And everyone knows which drink is theirs! This would work with game cards too-like monopoly chance cards...etc. Conversation piece!
No need to worry how to identify tumblers and other stemless glasses. Wine markers stay on for the party, and washes off with a sponge or in the dishwasher. Wait 30 seconds after writing on glass until ink sets. For chilled wine, put name above pour line.