| They aren’t promotional products, but these Rube Goldberg-esque billboards promoting various types of alternative energy are pretty cool. They were part of the Discovery Channel’s “Now You Know” campaign in New Zealand. |  |
| They aren’t promotional products, but these Rube Goldberg-esque billboards promoting various types of alternative energy are pretty cool. They were part of the Discovery Channel’s “Now You Know” campaign in New Zealand. | |