Item: Ring of Sins (source); appears to be a normal jeweled ring, but when worn causes the wearer to be disposed towards the sin in question, regardless of their alignment or species.

pictured, from top: Pride, Lust, Sloth, Wrath, Greed, Gluttony, and Envy

Item: jewel-encrusted belt awarded to the greatest shark-fighter in Texas. Has no magical effects, since whoever owns it is already famous for beating up sharks so what could they possibly need, but grants some nice bonuses on Intimidation checks.

Item: Jewel Rooster; scratches and pecks the ground in mineral-rich areas, digging up rocks and stones. Once per day, roll d100 to send it out foraging:

Item: Bracers of Biting the Hand. One character attunes the bracers to a particular action–say, stealing, fighting, or touching a particular substance (like gold)–and if the person wearing the bracer takes that action, the bracer’s mouth bites down. The severity of the bite depends on the severity of the infraction, ranging from a harmless nip to removing the fingers. Originally developed as a punitive measure given to thieves, the bracers have been adapted by more controlling quest-givers to force their hired adventurers to stick to the givers’ morals.