[mmsmatt]

US South here: A popular chain started putting to-go boxes on tables at lunch. If your whole table drops their phones in the box when you sit down, your table gets free dessert.

I've noticed just the presence of the game - even if my table doesn't play - greatly reduces screen time and habitual notification checks.

[knopkop]

A variation of this game is for everyone at the table to stack their phones in a pile. The first one to pull his phone has to pay the bill.