My friend Jon and I mined a Bitcoin in our Queens apartment in 2011. Back in those days you could hook some software up to your graphics card and after a few days, voila, you'd have a Bitcoin. I think by the end we had close to 10 of them. But in those days there wasn't much you could do with Bitcoin nor were there particularly safe ways to store them. Several big hacks later, we had lost them all and didn't really think much about it. Or at least, we try not to think about what could have been.