Clean up after yourself. If you get caught leaving dishes, cups, etc, be aware the force will hit you.
Clean up after each other.
Help clean up after others, - it's pretty easy to take an extra cup in the dishwasher. And best thing is, that you feel just a little bit better afterwards.
Or even crazier if the dishwasher is finished, try empty it.
General cleaning
The office is getting cleaned once a week.
On fridays please remember to remove any self-brought food from the fridge or the counter. If you are the last person to leave on, please be sure to run the dishwasher.