Springfield XDm 4.5 9mm in a Safariland ALS 6378 paddle (that's in the car)
Colt Desert Karambit
Cheapo flashlight from a local Big Daddy's
One spare mag in the thigh pocket of my pants and three (or four) in my backpack, either in the car or under my desk at school*
Maxpedition CPL-1 for that wonderful Samsung Galaxy S3 that I love so much
*No, I am not able to legally carry at school. However, I figure the least I can do is make any bad guy who steals my gun have to go and find ammo and magazines. Good luck, right?