When I used to work in a cubicle farm, it was important where you put your garbage. Instead of throwing your waste in the break room garbage, walk by someone’s cubicle and toss it in their personal rubbish receptacle that’s near the entrance. Chances are they won’t get up and look who did it. They will enjoy the aroma from the leftover salmon that you reheated in the microwave. If they complain just report them to HR because they are not being a team player.