I got a few of these from CountyComm:

http://www.countycomm.com/selflockingclip.htm

I’d like to create a very simple key fob with one. It would just be a simple bar with a hole drilled in the end, like one of the mini prybars, but without shaping, etc. The closer it is to the size of the clip, the better. I’d like it to be reasonably think and sturdy (say, 1/16″). Any suggestions? I’m also looking a little locally for some simple sheet stock that I can make one from.