Things to do to keep yourself busy at the farm?

I've been super bored, so I plan on spending a good long time at the barn tomorrow, and I need some ideas of what to do to keep myself busy, lol. I plan on the usual (grooming, riding, hand grazing, feeding), and I think I'm going to wash my brushes (they're due anyway) and maybe my horse's tail. He isn't due for a bath. I'll probably end up washing my saddle pads and maybe my saddle. Any other ideas of things to do?