Microflyers on Mars
Birds of Fire writes: "This article on Yahoo reports on work in Australia to develop tiny aircraft for Mars exploration. "Aircraft weighing as little as a chocolate bar could one day be darting over the surface of Mars with the agility of dragonflies and the eyes of bees."
Aircraft as small as a chocolate bar will one day fly on Mars?
Cost is not so important, since we're willing to spend quite a bit to get these things to Mars, but even so, if the cost could be brought done enough there might be terrestrial applications for little drones loaded up with various sensors.
"Provided by the management for your protection."