I usually have an eraser on me. That is not too odd for a college student, but my eraser is an "artists" mold-able kind, crammed into a ear plug carrier. Great for tinkering with, mostly just a nifty eraser. (Works like a champ too cool )

I carried a 2-type for a while (pen and pencil combo) but it did make the grade.

_________________________
Jim
Do you know where your towel is?
Don't Panic!
I have an extra.