I just invented a rather interesting new machine. It takes payment in the form of redstone dust, which it then puts away onto a neat little conveyor. Once it has registered and stored the redstone, it dispenses a random item from a dispenser. Most of the items are common things, like stone and dirt, but there's some obsidian and other valuables in there. Odds are you'll get common stuff. It's also, from my testing, completely cheat proof. If you try to pick up the dust after you place it into the machine, a door locks up in front of the payment slot and the machine is "frozen" until it is reset. There is no way to cheat the machine unless you dig through the wall. I have no idea of the practical applications of this machine in multiplayer, unless you set up some sort of exchange, like one block of x is equal to x amount of tries at the machine. Or if you just like redstone, a lot.
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