Found on our sister site, Wired Autopia, University of Illinois students showing off their automated crop-harvesting system using a model made with Legos:
"The students used LEGO Mindstorm building blocks and Robolab software to build the model. The "harvester" held one liter of BBs, which it transferred to unloaders that carted them away. Aside from the students dumping BBs into the harvester, the entire process was autonomous."
