Hey, y'know what I just bought for my Leica system? One of those medium-sized Igloo Playmate lunchbox/coolers. $19.99 at my Navy Exchange. Fits my Leica, three lenses, but it'd fit more if I wanted, and with room to spare. Inside the lid is a zipper compartment that can fit a folding camera and extra film. It's got a shoulder strap and handle, and the nicest thing is that it doesn't look like a camera bag. I look like I'm carrying around a six pack or my big lunch.
