USB Strain Relief from Walmart
By Ed Baumgarten
You'll find them at Walmart or similar in the camping department. I got the two you see above in a single pack for a little over a buck. Simply tie your USB cable around one of them and secure with gaffers tape leaving a little slack as shown. Hook the other through your strap loop and you're good to go. They disconnect and reconnect pretty much one handed and you'll keep your cameras usb (or firewire) connector safe, sound and fitting snug.