Isaac Newton vs. Rube Goldberg: A Gravity-Defying Chain Reaction

Isaac Newton vs. rube Goldberg is an extremely slick chain reaction aided by magnets and all matter of visual trickery. Just watch, try to guess which way is up, and have your mind blown. 

Via Colossal

Melvin The Mini Machine

Melvin the Traveling Mini Machine is an elaborate Rube Goldberg machine that fits in a pair of suitcases that executes the simple task of "writing" and stamping a postcard of your choice, that is, if the absurdly elaborate sequences of steps goes off without a hitch.