I use a couple of Kifaru UL Pullouts, but a lot of stuff ends up in an appropriately sized Ziploc too - they work great, extremely cheap, virtually weightless, and quick and easy to replace.
- Cheap super light "travel organizer" from ebay for my possibles kit,
- Couple things go in zip lock bags - mostly food
- SG camp pocket
- Kuiu zip dry bags - kill kit, random stuff
I've replaced all my various stuff sacks with DCF sacks that I've made at home. Ended up cheaper then buying Kifaru Ultralights and something like 1/3 to 1/2 pound lighter for all that I use, plus they're actually waterproof.