Only work and no play makes Jack a dull boy. Luckily, working together means the overall work stays limited ;) Some chores we do together, some tasks we divide. This page sums it all up.
Keeping the kitchen and the dinner table clean
Filling/emptying the dish washer
Wiping and cleaning out the shower
Notifying everyone when we're running dry (on rice, toilet paper, olive oil ...)
Parking/hanging our bikes compactly
Emptying the tumble dryer's water tank and cleaning out its fluff collector
Keeping acceptably peaceful, especially on weekdays
Closing the ground floor glass door in winter time
Our (drunk) friends at parties
Each other! Ask how things are going and listen :)