Tech Gadgets Vending Machine

I've been talking for some time about starting a company to stock old snack vending machenes in data centers; but stock them with things like cisco cons cables, ethernet cables, cage nuts, and the other sorts of things you might have forgotten when you get to the data center at 4am.

My initial thought is to use old snack machines and only sell things that can be sold for a fiver or so. It'd be nice to sell hard drives, too? but if I'm going to have $100+ product, I'm going to have to be much more certain that the machine will actually dispense product.