I was intrgued when I heard someone on the radio talking about 3D printers making edible chocolate so I looked it up on Google and found this article:

http://www.dezeen.com/2013/03/27/food-is-the-next-frontier-of-3d-printing-janne-kytannen/

While I don't have the time to dive deeper into this investigation, it looks like bionic body part and guns are included amongst the things we are already able to print with 3D printers too!  Looks like Star Trek replicators are practically within reach!