Another option are some of the National Geographic bags. I picked up one of the shoulder bags for carrying a camera with me everywhere I go. Has a laptop compartment, insert camera bag, 1 full width pouch, and several smaller ones. It has been faithfully carrying my lunch, a camera or two, lenses (70-200 f2.8 fits easily), notebooks, pens and pencils, etc. for a couple of years now. Before picking up my backpack I used to carry 2 bodies with lenses attached and my EF 300 in it for covering sports events.