Not technically a BOB (Havent recently taken any pics of my summer BOB, I'll see what I can do next week) , but this is the GHB I have with me all the time. If I need to get home from work on foot, I am looking at a 25 mile walk. In other words, a nice overnight hike!
Before going too far into the GHB, I suppose I should mention my daily carry.

Glock 19 in a Crossbreed Supertuck, multitool, flashlight, bandanna, keychain (with a backup flashlight, can opener, spyderco dragonfly, and even a key or two), wallet( with a few feet of duct tape, some tin foil, occasionally a little cash, and a cool ToolLogic multitool gadget) bic lighter (no I dont smoke, its just easier than a firesteel) and spare magazine for the G19.
ok, with that out of the way, my Get Home Bag.
The bag.

5.11 PUSH messenger bag. Not too big, not too small. Holds everything I need for an overnight hike (yea, I hike with this) and is small and light enough (just at 11 pounds with water and food) that I dont have a problem carrying it with me every day as I go thru my daily errands.
stuff in(and on) the bag.

*In the misshapen green drybag is a fleece 50 degree sleeping bag - plenty enough for most of the nights we have round here in the spring thru fall. cooler weather this gets replaced with a lightweight down bag, but the idea is the same.
*Campmor poncho. This is the smallest quality poncho I have found that is large enough to both cover me in the rain, AND be used as a passable tarp for my hammock. Love it so much I bought 3.
* sunscreen and bug spray. Its the Carolinas, and its approaching summer. Enough said.
*Small FAK. Celox, an Izzy, a few 3x3 pads, bandaids, aspirin and ibuprophin, and not much else.
*Emergency blanket. Can be used for water collection, signaling, rain cover, and even to keep me warm if a cold snap pushes thru.
*Hammock. I may as well be comfortable as I run away from the end of the world...

Water and food(kinda)

2 Liters of water on hand, a handful of purification tabs, a small Ti cup for boiling water, and 1200 calories worth of mainstay ration bars. Not fun food, but enough to get me home.
Other stuff.

*Taurus 709 slim (yea, I know, but it works for me) with spare mag and a handful of extra rounds.) And yes, it means I have two firearms on me. Redundancy and all that, right?
*Ptec AAA headlamp
*spare bic lighter
*matches
*batteries, both AA and AAA
*large garbage bag
*50' paracord
*Coldsteel Pocket Bushman folding knife.
*(NOT PICTURED, small prybar. I use it all the time, and forgot to put it back in for the pics.)
So, there you go. My Get Home Bag. I hope I never have to use it. Comments? Critiques?