If it snows - make a day of watching crazy snow antics on Queen Anne Hill. When it snows in Seattle, the whole city shuts down. Lots of steep hills here, and idiots who think they can make it up one in their cars.
Skiing down Queen Anne Avenue during a Seattle snow storm :) One winter when the Avenue was closed I hiked up one side. Got a cardboard box at the top grocery store, and slid down the other side to Dravus St. on the cardboard box.