You will often find signet rings off weak creatures. You can return these rings to their owners for a small reward.

Example:
Signet Ring

This ring is worn and dirty, but you make out the family crest of Ran er'Hoth. Surely, its return would be appreciated.

Ran er'Hoth is located in Marion. Offer him the signet ring and he will reward you.

Ran er'Hoth says, "Oh! I was sure this was lost forever. Thank you very, very much for bringing it back to me. Here, let me give you a small reward."

The reward was 210 shillings, though NPCs have been seen handing out as much as 500 shillings before.