15
The Peterson tool container is ideal for storing dice.
(lemmy.blahaj.zone)
The wide plastic tube that Peterson ships many of its tools in (and that you can also purchase separately, albeit with a large minimum order quantity) is also ideal for storing the standard six-die set of dice used in many tabletop role playing games. I suspect the overlap between physical security nerds and TTRPG players is significant enough for this to be rather useful.
Addendum: These containers are very common for specialized drill bits and also CNC ends. If you wanted a place to scrounge for these, I might suggest a local machine shop. Unfortunately, I haven't seen many clear versions of these for machining tools.
I have seen clear versions shipped with various chemistry supplies though, but I am unsure how to find a "chemistry shop" as easily as a machine shop. Knocking on the door of your local meth house is probably not a good idea....
Not a member of this community but I clicked the picture because I used to manage a machine shop. We discarded a hundred of these a day. Usually in red, green, blue, and clear depending upon the tool manufacturer.
Electronics parts too - at least Jameco would send ICs in these.