Super Bored

I am super-bored. There is still another 90 minutes left of my work day and I am utterly bored. Today is worse than most because a lot of the staff took a half day. I am the only one here in my section of the hallway. If I pop my head out of my office, I see nothing but dark offices all around me. It makes the place very lonely. So, I need some ideas of things to do because read Migraine drug free websites. Any streaming or social network sites are blocked. So I can't watch YouTube videos of kittens or anything. Any other ideas?