More ideas from Tom
Learn in 5 Minutes How to Whistle With Your Fingers Really Loud :http://www.askaprepper.com/how-to-whistle-with-your-fingers-really-loud/

A loud whistle grabs your attention better than anything you can yell. So of course it can be a survival skill. For me it is more a manliness thing.

How to make a bike frame bag - bikepacking

The frame bag is the most basic piece of bike luggage; here’s how to plan, design, and construct a simple frame bag for bikepackng and bike touring.