What would you have done in this situation (Read details)

When leaving a local concert last night, my friend spotted a key ring on the sidewalk. He determined that the best idea was to give them to a policemen but when we didn’t see one around, he drove to the town police station and left them there. One option I saw and mentioned was to leave them where they were but on top of a fence post so the people could spot them when they came looking.

The finder was my friend’s boyfriend so I didn’t say anything after my first suggestion, figuring it was his decision.

Just curious as to which solution – or any other – you think would have been the most efficacious considering they were somebody’s car keys?