I forgot one. A really good, bicycling specific rain jacket. I bought a vented/breathable jacket from J&G at bicycleclothing.com for $99. It's far and away the best money I've ever spent on a bicycle accessory. I have worn it every day that it's been raining hard or below about 45 or 50 degrees including all winter long (down to -25*F with layers underneath) for 5 years now. It is still in perfect shape.
It wouldn't be absolutely the first thing I had to start over, but it wouldn't be very far down the list.