Predominantly just in a drawer with other stuff.  Bought them in 2013 / 2014 from david at hardbtc. I'm hoping too that the private keys are not tarnished in anyway (but even if a few characters are illegible then it wouldn't take too much effort to crunch through the possibilities). Obviously I'm not going to try "peeking" at them unless they are unsold in which case I'll just get the funds out and use them as trinkets.