The nails come in handy surprisingly often. a 4" nail is quite tough and I have used it as a small prybar, the last time on the traditional tin of paint. Most people end up using a screwdriver or knife blade which isnt a good idea. If the nail bends you can throw it away and get a new one. The sharpened tip also make a very good striker for use on ferrocerium rods. You can also use it as a nail <img src="images/graemlins/grin.gif" alt="" /> In fact so useful that I would carry 1 in my trouser pockets if they didnt keep cutting through the pocket and falling out leaving me to repair the hole <img src="images/graemlins/mad.gif" alt="" />

I dont carry a hammer as I can usually find a brick or stone to use to pound it if I have too.

I havent tried this personally but I imagine putting it in the corner of a windscreen or window and hitting it with something would be a good way to break glass in an emergency.

I used to only carry one but came accross someone on another site who carries 4 and makes a small stand out of them when boiling water in a sierra cup, havent tried this myself yet buy I reckoned carrying another 3 nails wouldnt kill me. I dont notice the weight at all. I suppose that they would be a quick way of making a trident type thingy to catch fish and frogs for those who feel that they need to forage to survive <img src="images/graemlins/smirk.gif" alt="" />

The carabineers are handy for a few things and with paracord can be used to pull/hold/drag/lift a surprising amount of weight. The sling I just sort of threw in there recently since I had the carabiners anyway. Doesnt weigh much but is stronger than paracord and as its a bit wider its easier to hold. I've used it a few times to jury rig things together. But not hugely successful. May well give way in my pack to something else.

One thing I forgot in my jacket pocket from earlier is water purification tablets