I did the opposite thing: everyone in my family kept ruining the standard length lightning cables by smashing them against something while using their phone, so I found a 10-pack of literally 4 inch cables on Amazon.
Now their options are to use the phone or let it charge (or squat inches from the outlet). Haven’t had to buy any more cables.
My daughters tablet will go down the battery in like 15min of minecraft or roblox. And I don't mind her using it for longer then that. Plus, especially during covid, I was glad that they occasionally socialized with friends when at home.
I don't want to intentionally cause discomfort to them or me either.
15 minutes is extreme, but I find for my own time management I really need artificial interruptions to help me check in with myself and others about with what I’m doing is still a good idea. For instance drinking water and coffee all day, my cup empties, I hit a stopping point, I get up, pump the blood a bit on the trio back and forth to the kitchen, come back. And then an hour later it’s off to the bathroom. The only thing I miss about the office is the routines I haven’t been able to recreate, but I’m still trying. For instance I only fill my glass from the kitchen now instead of using the closer faucet to “save time”.
Having a game eat the battery in two hours might be enough gaming for one sitting. I have a couple games that used to eat my laptop battery in a few hours even when plugged in (60W charging off the monitor) but the new monitor has a bigger power supply, and that can almost keep up with the game. I’ve had a few late nights that I didn’t plan because of it.
Now their options are to use the phone or let it charge (or squat inches from the outlet). Haven’t had to buy any more cables.