"could we talk about those little multi function things that could make all the difference to the weight of the bug out bag for those of us not as fit as maybe we should be i would like to put forward first on my list disposable lighters with little led lights built in I know they are not worth much in the long run but as a weight saver I dont think they can be beaten. What do you think and do you have anything to add to the list."

"
Plastic bags - whether garbage bags or ziplock.. Billion uses, limited only to your ability to think.

Military Poncho - either used as a raincape, shelter half or groundsheet. Also green and helps you blend in while sleeping. Older ones do not breath well tho, but that can be good when in cooler weather"

"the Bushmen of the Kalahari desert use empty eggs to store water. They fill empty shells and bury them in shade under trees. An ostrich egg shell can hold about a litre of water. so why not caches of water filled ziplocks the bags weigh nothing take advantage of every drop of clean rain that you can and stash all that you can...
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"Ziplocks are actually ridiculously common waterproof containers for valuables such as phones; the problem comes with the water pressure breaking the seal after not even a few meters of depth. When it comes to rain or shallow water (like a puddle), you should be fine."

"I've seen ziplocks full of water, and I can attest that they will hold as long as you don't do stuff like sit on them or drop them too much. If you want, you can seal your ziplocks of water in larger ones to catch any water in case they burst."