I saw The Classroom Game of Cool swords on Twitter this morning and it made me want to go back to being a kid... until I remember all the inconveniences (like being dependent on all the adults)!
But I guess "being a kid" or at least "being young" can be a state of mind
Great game. Can be played anywhere and by anyone, as long as you can pretend to pass little messages (at the office, around a TTRPG table, maybe even with strangers at a convention?)