Inspired by the structure of gelatin and other colloids, this vessel is composed of interlocking shapes which limit the movement of neighboring shapes. This results in a fabric-like surface with a limited range of motion. Although it is roughly spherical, it flexes and shifts into oblong shapes in an organic fashion.
The skin of the vessel acts as a hinge for the opening at the top. The opening is held shut by a 2mm or smaller cord, chain, or string (not included) when it is dangling. There are also depressions built into the lip of the opening for the mounting of rare-earth disc magnets with the specifications found here:
http://www.rare-earth-magnets.com/p-5-nsn0592.aspx. The magnets are affixed with a gel-type superglue.