GAINWELL Metallic Wine Glass Markers 8Pcs, Non-Toxic, Food-Safe, Dishwasher-Safe, Wine Glass Marker Pens for Ceramic Plates, Parties & Weddings

Every time I have a gathering, or go to one, I whip these out. Everyone can pick their own color, write their name or initials on their glass, and you never have to wonder whose glass is whose. The ink cleans right off too. (Great stocking stuffer, these are only $10)