Office equipment

Well today I needed to find something that was office related.
So I looked around and thought no idea
I looked at the keys on the keyboard...no not that
I looked at the printer...now here is something that I could find an angle....
but no

Carried on and on till i needed to file some papers in a file and............

You got it yet?

Come on you can guess now.....

So did you get it? My holepunch