FIRE STARTER
The single most important piece of gear you carry in your daypack is fire starter. This cannot be stressed enough because fire is not only used to prevent hypothermia, it is also the best distress signal in case you are injured and unable to walk to safety.
So which is best?
There are many products for sale, as well as homemade fire starters, and all of them work great if you are trying to light the barbecue at home. However, will it work in 50 mph winds in a blizzard? Most don't.
More importantly, how many fires can you start? If you are injured and need to create a signal, you will need to build THREE separate fires in a triangle (Three is the universal signal for help). And you will need to build those fires in an open area so they can be easily seen from the air, where the winds are often howling. Also, if you are not injured and you are walking to safety, you will need to build several fires along the way.
And lastly, if you are entering the second stage of hypothermia, or a helicopter is flying nearby, when the time comes to build a fire...........You need it NOW.
The only thing I have found that meets these criteria is a can of WD-40, paper towels, and a lighter.
Carry the paper towels and lighters in separate zip-lock bags to keep them dry, and use one sheet for each fire. Break off dry dead limbs from a tree (Smaller than the size of a pencil), and put them over the paper towel. Spray WD-40 on it, light it, and POOF.......Instant fire. If it begins to die down, just spray more WD-40 on it until it takes off.