Taking the daughter to a violin lesson is an unnecessary exchange of money for servile work.
Cooking for dinner is fine - your family has to eat, so it's necessary work. We're not Jews, after all.
Going to a movie is another unnecessary exchange of money for servile work. And as the overwhelming majority of films are soul-rotting slush, not going to the movies is nearly always a good idea (not just on Sundays).
Sundays are days for prayer and rest. There are plenty of things to do with the family (games, reading, hikes, nature walks, bike riding, playing, etc) that don't require performing / paying for needless servile work.