beware, the seattle sombrero - it's the perfect accessory for that shorts-and-polypro, "I'm Going On My Mounties Intermediate Course" look.
I like the OR water bottle parka. Cheap, keeps your tea warm when iceclimbing, you already have a nalgene, and it wont break like a thermos will. Also in the summer you can use it to put bolts, bit and wrench in while drilling a new sport route, sort of like a chalkbag for bolts