Hahahahaha! I just throw them in a draw. Of course they are all unmarked so it's always a game of luck finding that one key out of 100. I did pick up 10 locks with same key at a show and another 10 locks the next year but turned out they were not the same key as the year before. Plan on buying another 10 locks this year. If I can get down to only 2 to 4 keys for all pins that would be great!