I bought these two Versipack GTG bags on clearance and matched them with some Liberty water bottles. I've been carrying the green one quite a bit. Here's what's in it.
The main compartment has a Laplander saw, a Becker BK-24 (with Sh@rp scales), bandanna, paracord, first-aid kit, a Rite in the Rain tablet, and a Princeton Tec Fuel headlamp.
This compartment also usually has my outdoor camera in it (a Panasonic DMC-TS2 with which I'm taking these pics).
The inner zip compartment has a fire kit (K&M match case, mini Bic, firesteel, Wetfire Tinder), a Fisher space pen, a small hone, and an SAK (Outdoorsman).
There's an open pocket under the main flap, and I've got a space blanket and a mirror in it.
The right side zip pocket usually has my GPS and keys in it.
The flap pocket has a whistle and a Fenix E11 in it.
The inside zip pocket often has a Kel-Tec P3AT with spare mag (where permissable).