Mark Champkins of the Quirky design studio Concentrate asked school teachers their most commonly used phrases ... and then print them on these "Mugs of Authority"
Teachers have no need to shout themselves hoarse, repeating the same phrases over and over - now they just need to point at their mug!
(The phrases are: Put That Down, Stop Doing That, and Don't Mess About.)
Genius! Link
--TwoDragons