While perusing Hackaday a week or so ago, I saw this excellent custom multi-tool that included a USB drive, (traditional) keys, a few selected Allen keys, and, of course, screwdrivers. Naturally, I felt I needed one, and after some thought, realized that I already had all the elements needed to make one: a Kikkerland 6-in-1 Hex Set and a worn out promotional multi-tool.
As seen in the video below, the first step was to disassemble both tools. The Kikkerland set was quite easy, requiring only a hex key to non-destructively disassemble the frame. The multi-tool required more “violent” means to get at the knife, can opener, and screwdrivers.
My tool configuration is meant to use primarily when mountain biking, and should fit my needs pretty well. My only slight fear is that if something like this was kept in a pants pocket, the knife could come open and injure the user. I suppose that’s possible with any multi-tool, but something to think about with something homemade like this.
I’ve got too many keys to use in a configuration like this, but for a more general-purpose tool, one of these USB drive keys would make an excellent addition.