Keep Track of Chores
When it comes to my living situation, everyone's in charge of their own dishes and putting them in the dishwasher. From there, we divide our chores so that the workload isn't too much for any one person on any given week. One person vacuums the living room and mops/sweeps the floors while someone else can keep the kitchen from getting gross and take out the trash, leaving the third roommate to handle bathroom duty. The best part is that you can divide the chores in whichever way works best for you, and just because you aren't assigned to a particular chore doesn't mean you can't help out mid-week if something is in desperate need of cleaning.