Between passing the salad and scooping up the potatoes, talk about traditions your neighbors, ancestors and even other cultures might practice. Lead the discussion towards where those particular traditions may have originated from, and then how your family might be able to try them out.
Moroccan and Japanese cultures practice eating on pillows on the floor, which may be something your family would get a kick out of. You could practice eating in the formal dining area one time per week or even an "al fresco" dining experience to usher in a new season.
Many families already practice some sort of thankful prayer or meditation before starting to eat, but consider incorporating a verse or two from another tradition each Tuesday, for example. You might even want to try a different language!
The easiest way to incorporate the traditions of others is in what you actually eat. Pay homage to your German ancestors by cooking up some sausage and sauerkraut, fiesta like your Mexican aunt did with taco night, or keep it easy and use the neighbor's idea of breakfast for dinner at least once a week.
Beyond lessening the burden off the super moms, switching or making a tradition of who actually cooks the meals can be a great way to celebrate birthdays, school accomplishments or just a normal day of the week. For example, have dad cook the family breakfast on Sundays, or make Friday nights the day that others cook for you by going out to a restaurant.
Creating memories through family traditions doesn't have to be complicated, but they do focus on and celebrate your family.