This burly courier bag from Lezyne is full of neat touches and is well put together to boot. You can fit a decent load in it and your kit will stay dry too. It's not at its best when overpacked but for medium sized loads and the daily commute it's a hard-wearing workhorse.
The Banjo Brother’s Commuter Back Pack might be just the thing if you don’t like messenger bags, or find panniers inconvenient. A two layer belt and braces waterproof design consisting of a “ballistic” nylon outer designed to resist the day to day rough n’ tumble while a nylon liner catches the contents and avoids the bin liner ritual. The subtle satin black livery looks classy sans bike while reflective striping and obligatory Led tab are nice safety features.