We call it "spill not"...!
https://www.youtube.com/watch?v=RzxuDymC39A

Finally, we can now carry mugs of hot, steaming coffee around without spilling them. The SpillNot holder promises to do away with accidental splashes bringing an end to stained floor surfaces and scalded hands.

The device is made up of a curved plastic arm and nylon carry-strap that is attached to a flat base, creating the perfect balance to stop anything from spilling.

It can even be rotated around above head height, twirled in circles, or swung from side to side as it is carried without losing any liquid.'It works using physics, centripetal force, so as you move and swing your arm the downward force goes to the base of the device.

A simple concept made into something that works well in every day life....creativity at its best!


http://www.tutubranch.com/2013/08/gadget-spill-not-coffee.html