I do the same. No phones after 8 pm. They are pretty free range before that. Better not catch them doing anything on their laptops other than homework after that. Everything goes on the kitchen table/counters after homework is over. I might relent a bit as they get older but tweens and younger seem to have zero self control with electronics. I let them free range with whatever on Saturday (i think everyone needs a safety valve day), but Sunday it's back to business as usual. Firewalls are great at limiting this stuff.