I was yesterday at the Minnesota Science Museum; after admiring the nice probability machine
I found in the excellent museum store an even nicer coffee mug, which promises much refreshment and strenghtening of the mind in the future:
(These mugs are produced by the Unemployed Philosophers Guild).
The same company made my son’s Einstein stuffed toy.
(You can see it if you click on the “Little Thinkers” link on their website.)
Those look nice too… I had also noticed an amusing Einstein action figure in the store…
That “probability machine” is also called a quincunx; see http://en.wikipedia.org/wiki/Bean_machine.