Hip pockets, whatever. Nothing particular. Sometimes a snack, maybe the camera when it's warm. I keep a little Joby Gorillapod in one shoulder strap pocket. Sometimes put a Sawyer Mini and straw in the other when I'm hiking where there's lots of water-then I just drink directly instead of carrying any. That's not really a regular thing. I wear a ZPacks Multi-Pack as a chest pack(really over my belly) when it's cool to cold weather, and it holds the stuff I would put in a lid. I'd use the lid if I needed more room-say if I decided to do a weeklong trip in warm weather, then my "top layer" would be in the lid to make room for food.