You of course need to know when they're doing their homework. Enable their device(s) for internet access in your home router during that time, disable it afterw

You of course need to know when they're doing their homework. Enable their device(s) for internet access in your home router during that time, disable it afterwards. You can surely hack together a nice solution to quickly block/unblock certain MAC addresses on the touch of a button with some IoT equipment and some Python scripts (like these Amazon ordering buttons which can be repurposed to control anything, or even a turnkey switch connected to an IoT sensor, which makes enabling/disabling internet access a cool and enjoyable process - I've personally planned to implement such a solution for quite a while now and researched parts and stuff, just haven't found the time to actually do it yet). If your kid isn't enough of a hacker already that she/he uses MAC address modification to get around your limitation (most aren't, which is what I'll assume for now), this should do it - and you won't have to deal with the manual work of blocking and unblocking for too long, because I can guarantee you that they will bend to your will rather sooner than later. After all it's just some easy-to-do and quickly done household chores, it's not like you want to enslave them. And once you've followed through on your "no-internet-for-lazy-kids" policy once or twice and shown them that you are indeed able to take their toy from them, the threat of doing it alone will do wonders when the next chore comes up and they start inventing reasons again why they just can't do that nasty work right now.