Here's what I've got in my backpack (Lowe Alpine Netherworld 90):

• Marmot Gore- Tex Rain Jacket
• Pacific Trail Packable Rain Pants
• Petzl Tikka Plus head lamp
• Bandana/baseball cap/stocking cap

Right Pocket:

• First Aid/Survival Kit (First Aid supplies, mirror, latex gloves, bags, whistle, compass, candles, ibuprofen, Tums, anti-histamine, chem-light, Leatherman, etc.)

Left Pocket

• Hygeine Kit (toothbrush, toothpaste, floss, deodorant, TP (mountain money), biodegradable soap, trowel)
• Various sizes of Ziplock bags
• 50 feet of nylon cord
• MSR SweetWater Water Filter

Center-rear pocket

• Kershaw knife
• Moleskine notebook/Pen
• Books (could be Desert Solitaire, Field Guides, etc)
• Green Trails maps (if I have the appropriate ones)

Main Compartment (From Bottom - Up)

• REI Zephyr Sleeping Bag
• MSR Whisperlite stove (or sometimes my son’s MSR Pocket Rocket)
• Extra fuel
• GSI Bugaboo Teflon Cook Set
• Food (Ramen, couscous, oatmeal, etc.)
• Plate, cup, bowl, travel mug, fork, spoon
• Clothing (depends on the weather)
• Sandals
• Nikon D50 Camera

Strapped to the outside:

• REI Clipper Tent
• Therm-a-rest Pad
• Tripod