> I stumbled on this elegant [lockable] box you put phones into and it blocks all radio communications.
If you truly want to block yourself from using your phone (or similar) for some amount of time, the Kitchen Safe time-lock boxes are great. They don’t look particularly elegant, nor do they block radio communication, but their unique feature is that you’d have to irreversibly physically break them to access whatever you locked inside before the timer has elapsed. There are many similar products, which however usually have an “emergency” mechanism to preempt the timer, which defeats the purpose.
If you truly want to block yourself from using your phone (or similar) for some amount of time, the Kitchen Safe time-lock boxes are great. They don’t look particularly elegant, nor do they block radio communication, but their unique feature is that you’d have to irreversibly physically break them to access whatever you locked inside before the timer has elapsed. There are many similar products, which however usually have an “emergency” mechanism to preempt the timer, which defeats the purpose.