Rube Goldberg Contests
Argonne Rube Goldberg Home Page, National Rube Goldberg Machine Contest, Purdue University Contest, Union College Contest
Marble Machines
Amusing to watch artistic contraptions.
Official Rube Goldberg Web Site
Information about Rube Goldberg, his drawings, his machines, and contests.
Rube Goldberg Machine
This Rube Goldberg Machine will turn on a blue-light thereby revealing a hidden message in 47 steps.