Having an intentional, consistent, and efficient approach to packing your gear for a backpacking trip saves time and energy while hiking and in camp.
Hyperlite Mountain Gear Pods are clamshell design, waterproof stuff sacks designed to fit perfectly inside backpacks.
The Red Paw Packs Flatiron Pack 28 L (13 to 19 oz / 368 g to 538 g, MSRP from $220) is a customizable low-volume overnight / daypack with a unique zippered main compartment.
Having accessible "pockets" on your pack is useful for keeping little bits of gear handy without taking off your pack. But consider a multi-use pouch that can also be worn as a standalone fanny-style pack.
The Drop 40L is a 30 oz (842 g), small-volume pack designed to make externally stored gear easily accessible while moving quickly.
The Osprey Lumina 60 Backpack is a sub-2lb, internal frame pack that is gender specific and found in outdoor specialty stores.
This REI Flash 55 Backpack review features a user-configurable, lightweight, internal-frame, roll-top pack.