2. Ivation Hand Crank Dynamo Power Generator
There are numerous hand crank generators available, but the advantage of the Ivation Dynamo model is that it offers multiple useful purposes. For example, cranking the unit for just one minute will give you 30 minutes of flashlight life, 20 minutes of access to the emergency radio and three minutes of talk time on your cellphone.
This unit also has a built-in solar panel to help keep it charged, and it is water resistant so that you can use it when it is raining.
Ivation packed all of these features into a 6.6 ounce device that is relatively reliable. However, please note that if you let the battery run all the way down, it will be less efficient going forward.