play music, then they started juggling. Now quadrocopters are feeling emotions as well; namely, jealousy. One of Flying Machine Arena's dainty quadrocopters, nicknamed Juliet, was compelled to build its own synthetic Christmas tree after spying an authentic fir through a glass window. Sure, stacked bricks of festive foam seem innocent enough, but look into those ping-pong ball eyes and tell us you aren't a little worried that next year's "war on Christmas" will be the machine's war on humans. Fly past the break to see Juliet's envious construction project for yourself.