I got a nice jacket for Christmas and wanted to mod it right away for good EDC use. I knew about the Gerber GDC Zip blade but I couldn't justify the cost for something so small. Quick look around the office/workshop and I found a candidate for my own version. A "flippy" USB drive... Pretty straightforward so here we go.
Step 1: Find Your Candidate
Step 2: Gut the Sucker
I then reassembled the housing, compressed the metal to hold it tight and voila!
Step 3: Finishing Touches.
Clipped to my jacket and we are all done. Pretty happy with it and definitely handy to have just on my jacket and total cost was effectively zero since I had the parts laying around.