We just got back from a visit to the Shore Acres State Park in Coos Bay, Oregon. If you are driving through that area (most likely headed south this time of year), you should not miss the holiday lights display at Shore Acres. Very much worth you time. It goes until December 31st.
In addition to the holiday lights, if you get there in the afternoon, there is time to walk around and photography the interesting ocean-side rock formations in the park. You can catch some beautiful sunsets before it gets dark enough to enjoy the lights. There is also a holiday house all decorated up where you can get some warm cider and cookies. They have a gift shop in the park as well.
This is also a great place to visit in the summer when it is transformed into a flower garden.
Lots of RV campgrounds nearby and there are other interesting things to do in Coos Bay.