So far, my favorite Christmas gift this year is my auto harp. My father-in-law, a great collector of all things random, scarce, useless, and priceless, had this little treasure tucked away in his warehouse. I spotted the black case which I recognized immediately as some sort of musical instrument. I dusted it off and strummed away. It's an acoustic instrument with buttons that press the strings to play the correct chords, sort of like an accordion, only with strings rather than air to make sound.
The auto harp came with Christmas music and a "how to" book for beginners. It's the perfect gift for me. I was mourning having forgot to pack my guitar on our Texas trip, and with no way to make music, I didn't know what I would do so far away from my piano. This was one of my first attempts at a complete song, "Away in the Manger," it only has 3 chord changes. :)