posted on Dec, 10 2010 @ 05:28 PM
A garbage bag can be used to store a small amount of air,which can be drawn in through a plastic tube,for staying under water for longer than one can
normally hold one's breath.
Scoop some air into it,put the tube into it by wrapping a rubber band around it,and stuff it up under your shirt,or let it float.
Keep in mind you can't go very deep,your respiratory muscles cannot counter water pressure beyond about 10 inches.
You can actually re-breathe the air from the bag for a time without having to hold your breath.
Be careful with this though,it can be dangerous.
Since garbage bags are not particularly heavy,and can be very useful,I suppose they would be handy to have on hand as a barter item also,toilet paper
edit on 10-12-2010 by chiponbothshoulders because: (no reason given)