You've gotten a lot of good suggestions.
My commuter is a recumbent with a rack and fenders and I sling a backpack over the back of the seat. My utility bike is a 20 year old Specialized Hard Rock with fenders, racks and panniers. And I have a Bikes at Work trailer that acts as my truck. This gives me a lot of flexibility.
For water proofing, I often just put my stuff into a shopping bag within the panniers or backpack. And being able to take your stuff into the store with you is important as well.
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"He who serves all, best serves himself" Jack London
Originally Posted by
Bjforrestal
I don't care if you are on a unicycle, as long as you're not using a motor to get places you get props from me. We're here to support each other. Share ideas, and motivate one another to actually keep doing it.