Bitcoin and cryptocoin mining involves an element of chance as to how long it takes for each block to be solved. What kind of lucky charms might be interesting to miners, if any? I'm envisioning something rare, that might be placed on or near Bitcoin mining rigs. Maybe a decal, precious metal, or a meaningful symbol. How about putting magnets on your network cabling, or a wall clock with a tritium pendulum? Post your ideas, I'd love to exploit them.