So I made a decorative thing out of an old thumb drive. This is the less interesting side.
The electronics, such as they are, are cannibalized from an old thumb drive. They're cheap, and the case can be pried off easily with a screwdriver or cracked with pliers, leaving you with a circuit board attached to the USB plug itself. The whole thing's about the size of a stick of gum.
The heart of the case is a section of 3/4" wooden dowel. Most of the work on it was done with a Dremel drill press and a bunch of different bits. To make space for the drive, I drilled a bunch of holes in the end, more or less outlining a rectangular hole. A lot of material was removed by that alone, but I enlarged the hole with the aid of some router blades and a few others. By the end, it was nearly just a thin wooden shell.
The bands around ends are from a short section of copper pipe, removed with a pipe cutter (maybe $8 at your hardware store). Since they almost-but-not-quite fit over the ends of the dowel, I used a sanding/grinding bit around the ends of the dowel, shaving down the diameter just a bit, until the copper rings fit. The dowel was prepared for the other metal fittings by a lot of drilling, from tiny, tiny bits in the drill press for the parallel wires to a 3/16" bit (attached to a full-sized drill) for the top "window."
Once all the holes were drilled, the dowel got a coat of dark stain and then one of polyurethane to seal it. The various bits (decorative square brads and long bronze-ish pins from the craft store, a small grommet from the fabric store, and the aforementioned copper rings) were put in place and secured with garden-variety cyanoacrylate. The only unusual bit is that the grommet "porthole" has a layer of woven brass "fabric" behind it. I cut a tiny square, a bit larger than the diameter of the grommet itself, snipped off the corners to make sure they wouldn't project as much, and pushed the grommet through the hole in the dowel, wrapping the fabric over the end and helping wedge it in place.
The bullet end is made from a plastic gear (ordered in a large, cheap bag years ago) painted copper and secured by nailing a decorative tack from the hardware store into the end.
And when the drive is in use, you can see a bright red light through the porthole.