Inspired by the bloodwine cup from SNW S02E01, 3d printed bands around a donor item (2qt aluminum measuring cup).
The glyphs used in the production version didn't break out as making any sense, so I went with "drink to the death of tyrants" as a nod to Kahless slaying Morath.
Print files and link to example cup here if you want to make your own: Alien Ridge Forehead Blood Drink Cup (Bands) by BlackSeaProps | Download free STL model | Printables.com