Seeing this 3D printed Wave toy siphon out a drink is pretty awesome. It will draw liquid to anther glass until both have the exact same amount of liquid.

The $12 3D printed nylon tube by Shapeways is pretty impressive to say the least, though you'd better not be drinking from it. The plastics used in the company's 3D printers are not safe for drinking.

[Shapeways via Notcot]