Determine remaining daylight on your hand. Use this simple trick to measure the remaining daylight without a watch. Count the finger widths between the sun and the horizon. Each finger is equivalent to 15 minutes, with each hand totaling an hour.
Want to make some awesome homemade weapons? In a SHTF situation, you're likely going to need a way to protect yourself. Weapons, though very useful, are also a lot of fun, especially when you can make them yourself. With a multitude of DIY weapon techn