I like the RAIT, or Redundant Array of Independant Trashcans, approach
Preparation:
*One of them bunny-doo shits
*A significant number of people out of their cubes at meetings or lunch
Execution: Move swiftly from cube to cube: pants down, drop a pellet in the trashcan, pants up, at each cube. Perfect timing is a necessity, as is remaining quiet and listening for footsteps.
