Ethical Dilemma

What do you do when you see a set of keys lying on the ground?  This was on a corner outside of my building.  I was walking right past but I stopped to pick them up and take them to the office.  Who knows if the owner even lives near by? Did I have to turn them in or should I just have left them there? Were they better off where they were? What if the owner goes back to that spot (because they know were they lost it)????  Ahh....I over analyze insignificant things. There wasn't anything important on the anyways.  There were more keychains than keys.  I recently lost my gloves at an HEB.  I went back in the afternoon and checked the lost and found.  There they were.  Sooooooooo maybe the person who lost the keys would have some sense to check the places around where they were to see if someone turned them in.