SAFTEY FIRST

ZIP IT UP. I know of a cameraman that absent mindedly slung an unzipped bag over his shoulder and dumped a grand worth of glass on the sidewalk. NEVER leave a camera in an unzipped bag. LEASH LAW. Use a leash, and if you use a longish one like I do, then it's a good idea to run it between thumb and forefinger. This shortens the drop if it should slip out of your hand and lessens the odds it could bang into something like a door.
DOORS are DANGEROUS. Always stop and take a second to protect your camera when going through a doorway. Establish good habits.

bOngo sez: "Leash ON Zip UP Watch OUT".