I use the LocalHarvest food and farming events calendar to be alerted to happenings of interest. You can enter a zip code and enter a distance radius of 25, 50, 100 or 500 miles.
Calendar of Events for Portland 100 Mile Radius
For December, there are Christmas craft fairs, a workshop on making your own wreath, Christmas trees to harvest, and even a getaway to stay at a local farm for the experience. Since I spent many a night at my grandparents farm, I’ll skip that one. Farm work convinced me I was cut out for something indoors and away from animal dung. I honor the farmers, and people think I’m nuts to prefer working with human bodily fluids in the medical lab, but that was my choice.