Greedy/Pythagorean Cup by MrSatyr | Download free STL model | Printables.com
The Civilized Glass by Mr. Sci Science Toy Factory | The Civilized Glass: http://physicstoys.blogspot.com/p/physics-toy-store.html A most elegant version of the famous Pythagorean cup. Functions as a... | By Physicsfun | Facebook
cohost! - "The Greedy Cup Has Become Even More Devious"
The Pythagorean Cup Will Keep You From Drinking Too Much | VinePair
Pythagoras Cup - Etsy
Amazon.com | Pythagoras cup - Pythagorean two fair cup: Coffee Cups & Mugs