Here's a guide for you to find something to do in office.
1) Take all sensitive documents and bring them to the shredder. Shred them in your boss's personal shredding machine.
2) Take some styrofoam boxes for storage of equipment and crush them into little pieces.
3) If there are any pets in your office, whether it was fish/cat/dog/human, simply kill them and cook them.
4) Throw the styrofoam balls you made and confetti created by the shredder around in the office. Then serve every one in the office with the cooked pet.
