I have a big backpack that holds everything that I’ll take on longer hikes.  It has cup holders, a tripod strap, a rain fly and more than enough space to cram snacks and an emergency kit as well as all my camera gear.  I’ve had theLowepro Flipside Backpack for 5 years now and I love it.

If we’re just going out and about I’ll pack a small camera bag (like this Lowepro Adventura 170 Shoulder Bag) with the necessities like extra batteries, cards, poralizer and maybe a spare lens.