Keeping track of the keys!

[Jonie Lieberman]

I'm so frustrated right now! Between all of my properties, gates, garages, etc. I have a lot of keys to keep track of. I have them on a board and had them separated on hooks with the hooks labeled for each key. The board was knocked down and the keys scattered so I have to figure out which key goes to which property. I had a couple of them stamped with the house number when I had the locksmith make them for me. I would like to stamp them all so I don't have this problem again but I'm not sure what tools I would need to do it. I am hoping someone can share their methods of tracking all of their keys so I can come up a better way of tracking mine :). Any suggestions?