Ask someone if you can borrow theirs for a while.
Take someone's pen while their not looking.
Ask someone if they have a spare pen.
Do nothing and wait untill someone notice and asks you if you need a pen.
Walk away as if nothing happened.
Help clean it up.
Buy explosives and blow the box up. (Tehehehehehehehe...)
Call the cops and tell them to arrest the box for getting in your way.
Walk around the box.
Hire an assasin to kill the box.
Take an eighteen (18) wheeler tractor trailer and run over the box