Once you’ve got your bike (which you should by now), the next step is to pick up the appropriate accessories. For commuters, second only to a helmet is a suitable bag that holds the necessities — phone, lock, multi-tool, pump, spare tubes, and tire levers should do it — and, beyond that, meets specific personal work or pleasure criteria, like a laptop, camera, or spare clothes. The key to the right carry is something functional, good looking, and with the compartment space to haul the right junk. Do your needs require a backpack, messenger or something else entirely? This roundup offers all of the above, with a preference toward versatility both on and off the bike.