http://www.forbes.com/sites/tomiogeron/2012/12/17/burrito-bomber-drone-parachutes-carnitas-to-your-doorstep/  (the slideshow is at the bottom).

http://tacocopter.com/  (a link referenced talks about a UAV that delivers tacos!)

http://www.forbes.com/pictures/ehfk45ediek/aerocopter-mon-tilt-rotor-vtol/  (very interesting design here).