I have my own little 3D printer. I used it to prototype a slightly more durable Google Cardboard. My girlfriend and I are in the middle of putting together a lasercut wooden Settlers of Catan set. I turned my Raspberry Pi into a browser-based sftp client.
I play piano, mandolin, guitar, bass, bouzouki, ukulele, dunun and kazoo. I learned some from Mitch Chakour, some from Bisko Kaba, some from Bruce Blanchard and a lot on my own.
Lane Lawley creates stunning algorithmic art. Michael Potter built a system which determines optimal start location in Settlers of Catan board layouts. Sarah Smith and Ned King are accomplished musicians.