I have a Spec-Ops brand T.H.E pack... fairly compact in comparison to a duffel bag, easy to haul around on foot if need be with chest and waist straps to help with the load, holds quite a bit internally and has MOLLE webbing covering the outside of it top to bottom so strap to and attach extra pouches to.

In it I have an always full 1.2L Camelbak bladder (in the dedicated pocket for it) with a neoprene covered hose and an on/off valve with a covered mouthpiece, keeps the crud out.
Other contents...
-Space blanket.
-2 MRE's.
-A couple long sleeve shirts and a balaclava wrapped up in a hoodie (all UnderArmor brand, dries fast if wet and that shit's warm!).
-Gerber Recon-M light (compact, LED powered, red/green/white light filters).
-Box of .45 230gr FMJs for my 1911 and some spare batteries for my light.
-Ka-Bar and e-tool strapped to the webbing on the sides.
-Military compass with reflective piece.
-Monocular (easier to fit than binoculars).
-A flattened roll of duct tape.
-Ziplock bag full of dryer lint and a magnesium/flint striker.
-Miniature bottle of Smirnoff (for disinfecting).
-A Nalgene bottle with 50ft of 550 cord wrapped around it (stays in place with some duct tape), containing a couple glow sticks, water purification stuff, some liquid bandage (glorified super glue), needle and thread (for stitches), a couple packs of quick-clot, and some of those Powerbar gel things (tons of carbs and sugars).

The pack lives at the bottom of my staircase, pretty much central to my place and I'll pas by it on the way to the front door or the garage.


What do you guys keep ready to go?