The blackboard of the middle ages
A brightly colored ink that hardens the skin.
A small, ordinary looking red pouch that deters all but the most skilled thieves.
This thick sauce, usually a condiment on the platters of the rich, has found a niche in the equipment of thieves.
Temple of some malign being invites you warmly and offers help (curing,needed spell etc) for some minor sacrifice . Sacrifices must be everytime bigger to work - up to living inteligent creatures. Maybe you pay some other price,too...