I often thought just that. A part of me, perhaps just a skin cell, is going into space ;-). I have never touched a Moonrock, as they were always behind glass or in plastic when I looked at them.

One of the things we did at work was take the stickers off of chiquita bananas and put them on a unit as if it were an inspection stamp. Not very clean for a clean room but I'm sure they were cleaned up before sending them to the spacecraft.

In the early days there wasn't much in the way of clean rooms procedures. We used to warm up burritos for lunch inside the hot test chamber right next to the unit we were testing. Crazy but true. Funny thing is we didn't have any more failures then as we did later under clean room conditions.