I have always been a fan of theIlbera Bicycle Bag PakRak Clip on and Quick Release All weather Panniers, and the Generic Bike Cargo Racks bicycle Pannier Mountain Carrier rear rack.. When I was commuting more than 20 miles to work, this combination worked wonders for me.

I use this rack from amazon. Works great and is holds all my clothes and my lunch.

These Panniersare a great compliment.