One of the fun things about the theme I use is that I can upload my own pictures for the header. I usually have between 6 and 9 pictures during any given period that randomly appear. I try to update these about once a month to keep the images fresh and seasonal, since so many of my picture are outdoor shots.
Here are the images I just added:
I’m thinking that for next month, I may just do a set of my favorites from the year. That may depend on the pictures I take between then and now. I have a set of all the headers I’ve used on flickr.