I got a really sweet carbon fiber bicycle from the coins I mined. Figured there was no way they'd ever go higher than 20$ and it was basically free money. Looking back, sure, I could have retired on that sum if I'd held it, but at the time, I had no reasonable expectation that it would be anything but a fad.
Won a few races on that bike, and met my wife on the race team. Net win.
I occasionally kick myself for buying weed using bitcoin like it's intended purpose in those days. I had quite a bit. lol.