I will show you how to make something you need from something you don't need......turning an old bicycle inner tube into heavy duty rubber bands of various sizes and strengths.This instructable doesn't seem very important, until you consider that using this advice in a variety of other applications can save you a lot of money over time. When you repurpose something you have into something you can use for some other need, you aren't just saving the money you might have spent, you a...