I really didn't have to do that much. They came home from school and we would talk and sit at the table and do homework. Or they would be outside and play with friends for a little bit, then do some homework, dinner and then we would watch TV together.
Saturdays they watched a little more TV in the early morning hours, say 8 to 10 before everyone was up and around.
Sunday afternoon we would watch a rented movie during the winter (North Dakota - only crazy people played outside!)
As fas as what works, we were the parents and if we said turn off the TV, it was done, or I did it and we found something else to do. They didn't argue the point, they were excited to be off on some other adventure.