As a man who loves things that come out of tubes, I am excited about the Discov3ry Extruder. Designed as an add-on to popular 3D printers, the system is essentially a plunger connected to a nozzle that squirts out pastes of various types including icing, Nutella, spackle, and silicone.
The product just launched on Kickstarter and has surpassed its goal of $30,000. The extruder itself should work on most major 3D printers including RepRap machines and Makerbots. The extruder itself attaches to the standard extruder tip of the printer and then you have to set the specifications for various substances, including the aforementioned Nutella.