The folks at iRobot apparently have plenty of time on their hands. They created a prototype wireless, robotic vacuum cleaner...powered by a hamster running inside a spinning ball.
The rodent's movements with the ball are fed to and analyzed by a complex set of sensors, which then guide the actual vacuum device to mimic the animal's speed and direction.
You can see where this is going: it's a clever ploy to then get you to buy a second robot that would automatically feed, water, and clean up after the hamster in the first robot.
It's all here via YouTube.
Robot-related:
<a href="https://www.networkworld.com/community/node/39255">Robofi: at CeBIT, flying Wi-Fi robots for emergency response</a>
<a href="https://www.networkworld.com/news/2008/012408-super-bowl-lxii-2028.html">Super Bowl LXII 2028 - The future of football</a>
<a href="https://www.networkworld.com/news/2008/030608-open-source-robot.html">Open source robot: your next personal assistant</a>
<a href="https://www.networkworld.com/slideshows/2008/091908-big-bad-robot-warriors.html">Slideshow: Big bad robot warriors</a>
<a href="https://www.networkworld.com/video/?bcpid=1343712625&bclid=1363192037&bctid=4960658001">Video: Year in Review: Robots Everywhere!</a>