Got a garage band? This instrument pretty much needs a whole garage for itself! Swedish musician Martin Molen has worked with musical instruments that we don’t often see or hear, like the glockenspiel, traktofon, and the Theremin, but this may be the most exotic yet, and it’s his own invention. The Wintergatan Marble Machine is a hand-cranked music box containing two thousand steel marbles (and LEGO parts) that activate a kick drum, cymbal, vibraphone, bass and other instruments. The Wintergatan was made by hand and took over a year to complete. It’s unlikely you’ll see it anytime soon unless you’re willing to travel, because it must be disassembled to move. Read more here.