We found another cool Kickstarter project, the Vaavud Wind Meter for your iPhone. This device fits into the audio jack of your iPhone, iPad, or Galaxy S2 and S3, and it measures your real-time wind speed. Better yet, it does so without any active electronics. Instead, the developers are converting data from two magnets in the device's rotor into wind speed. Pretty cool! They've already hit their funding level of £20,000, but there are some Kickstarter edition units up for grabs if you want to boost funding even higher.
Check It Out: Vaavud Wind Meter Measured Wind Speed with Your iPhone