light bulb miner guys. it's big
http://www.coindesk.com/bitfury-light-bulbs-mine-bitcoin/"We believe that the projects focus should not be on making money from bitcoin mining, but on creating innovative solutions with main purpose to use this product for educational purposes and fun."
Which one your girlfriend is more likely to come upstairs to see:
(a) the autographed photo of you and Justin Bieber;
(b) the pet rock that Granma gave you;
(c) your bitcoin-mining lamp?
But maybe one can use heat from a mining chip to drive a Lava Lamp?