I still love to revive old hardware and push it beyond it limits. Mostly because i think it's fun, but also because it's dirt cheap or free. Back then made an old GPS system play Monkey Island or mp3's or read E-books. Reinstalled lots of old Android phones and tablets. Made photo frames out of them. Made webcams out of them. Transformed old laptops into Chromebooks. Make lots of old NAS devices work again. Stuff like that.