The prank ideas you can make: Plant your grass on your colleagues' keyboard. Connect the air horn behind the door. Put paint on the windshield wipers in sky belt colors. Make juicy jokes like this. Attach the room's perfume to the latch and throw it into someone's room. Have a high-level commitment to technology in someone's office. Create an infinite loop around someone's car with shopping carts. Go into the car seat and watch people react.

Very Clever Prank!