Twenty Questions
One of you thinks of something. The other has twenty yes-or-no questions.
Everyone silent for five minutes, then say what you heard.
Genuinely useful before bed, or when a room has become too loud for anyone to think.
Rien du tout.
Deliberate silence is uncomfortable at first and then unusually settling, and it gives an overstimulated child a way down that does not involve a screen. Reporting one sound afterwards gives the silence a purpose, which is what makes children agree to it.
None needed.
None.
One of you thinks of something. The other has twenty yes-or-no questions.
Cat, hat, mat, flat. Keep going until you run out.
Face each other and copy every movement exactly, in silence.
Grass, then paving, then a towel. Shoes off, eyes closed.
You give three random words. They build a story around them.
Teach them a game adults actually play.