These are name-reminder tools to label players by name inside of the Grimoire.
I don't use these as often as I anticipated. These take time to pull out, organize, and set up. In praxis, these tools work best if there is enough time and space to deploy them. If you and your venue has the luxury of time, it may be easier just to have the players learn each other's names. This tool is room-to-room, game-to-game dependent.
VERY IMPORTANT DISCLAIMER: None of these accessories are essential to enjoyment of this game.
Credit to lxthrp on Thingverse
I had these printed from an acquaintance and finished them myself with dry erase tape and self-adhesive felt. My guillotine paper cutter made it easy to trim the dry erase tape.
One downside to these is that the maximum grim capacity shrinks to 18 players. The included photo was the most I could fit inside the grim.
Creator source: Blood on the Clocktower dry erase token borders (Ultimaker Thingiverse): https://www.thingiverse.com/thing:6031069
I picked up an inexpensive acrylic and felt set of name tags on Etsy. These work very well and the Spy & Widow appreciate them too.
Dry Erase Character Name Tags for Blood on the Clocktower (BOTC)