Rings that you can hang off your NPC and PC minis to track what Dungeons and Dragons conditions are affecting them.
There are some conditions that are not technically D&D 5E "conditions" that you might find useful to track on the battlefield. e.g. "Concentration" so you can remember to do CON saves.
Conditions included in this pack...
Bane, Blessed, Blind, Charm, Concentrate, Deaf, DeathFail, DeathSave, Dying, Exhausted, Fear, Grappled, Hexed, Hold, Incapacitated, Invisible, Marked, Paralyzed, Petrified, Poisoned, Prone, Rage, Restrained, Stunned, Sworn Enemy, Unconscious
If there are any other conditions that your particular tabletop game needs, then let me know in the comments.