I think this guy is on the right track, he has a good starting point for a GHB. I don't disagree with any of his choice of items so far, but he appears to have left out a few key components. He could learn a thing or two from the boy scout ten essentials list, and from a basic list of key survival items. Based on those, a few key items I see he has left out are:

- rain gear
- sun protection
- map and compass
- fire starting items
- extra batteries for the light
- shelter items
- cordage
- signalling items (at least a whistle)
- duct tape
- sewing kit
- wire
- a metal cup (and/or water purification tablets)

Now, I realize I don't know about ALL the gear he may be carrying, perhaps he has a lot of this on his person or in a pocket survival kit he is EDC-ing that we don't know about. Maybe he has additional pack or gear in his vehicle. I also realize I don't know how far he has to go to get home, it may be 1 block, it may be 100 miles. I do know, however, that if i were putting together a GHB, I would make it without the assumption that I have a home to get to. I would also make it without assuming I could get to extra gear in my vehicle. To me, I would just be building another BOB of sorts.