The story: A few quarters ago they offered a guitar making class at my volunteer job. For some sad reason or other, someone left this half-made one behind and it finally ended up on the free table. Since I was out of boards at the time (this was like a day before I found the Etsy stash), and had been looking at mosaicguitar.com, I snapped this puppy up!

It's freaking awesome.
I will say this for anyone who wants to grout within holes in the future:
(a) it's freaking HARD to get in there, it's hard to keep the grout in there on the sides, and it's especially hard to clean inside the holes.
(b) Use painter's tape to block off the holes (or the rest of the piece) to do different color grouts.
(c) Be prepared to grout inside the holes twice: once to cover the glass pieces in the center and another time to re-grout the sides because that shit came off quite a bit on time #1. It still comes off in some spots, grrr. I'm a little burned out on grouting after this summer...
No, I don't play guitar, but I figure it'll make a nice birthday present for someone who does at some point or other... or I'll just enjoy it in the meantime. 'Cause it's awesome.