3. Sensordrone
It looks like a big ugly USB stick, however that little puppy is bristling with more sensors than the Millenium Falcon. For the scientifically inclined among you, this relatively small device should be making you very excited. It literally records everything that's happening in its environment: Temperature, Humidity, Luminosity, CO1 levels, Pressure, and much more. It has a plethora of uses, from telling you basic weather details to a use as a medical thermometer. Tasks like measuring the height of a building, the location of a stud in the wall, the possibilities are endless! This is basically every sensor your phone will ever need. Now it just needs to software to run them, and give them uses.
SensorDrone on Kickstarter