A popular Christmas time post is a picture I took a couple years back of an oak tree in Bloomington, MN that is covered from root to branch tips with white lights. I think about 50,000 to be inexact. Here are some others from that time. Again if you find yourself near the Mall of America, this is just minutes from there and worth a little diversion from the hustle and bustle.
Here is the link to the original post The Lighty Oak