Toy company GoldieBlox has a new YouTube ad which features one of my favorite devices, a Rube Goldberg Machine!

GoldieBlox wants to remind parents that not all girls want dolls for Christmas.  And their company makes a product that's sort of like an erector set, but specifically geared toward little girls.  Check out this amazing video, and I dare you to try and get the song out of your head!

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