The Commodordion is an 8-bit accordion primarily made of C64s, floppy disks, and gaffer tape. Article includes a video of the Commodordion in action.

Linus Åkesson (lft) converted an old electronic organ into a MIDI controller and 8-bit synthesizer using two 8-bit ATmega88 microcontrollers. The synthesizer sounds very NES-ish with its bright square+triangle+noise oscillators. lft is musician and has several videos of himself on youtube playing very nice renditions of various chiptunes (from memory) on his Chipophone.

That time a bunch of nerdcore rappers had beef with Alex Trebek. "Your achievements are watching smarter people succeed."