If you give the fourteen year old a computer and a pair of large speakers to plug into it she will entertain herself for as many hours as you like (we’ll apologise to the neighbours afterwards).
If you give the two year old more or less anything; tricycle, bucket of water, parent’s phone, he will entertain himself for as long as it takes till someone notices and confiscates the phone (oops).
If you give the fifty-something year old a computer and a coffee machine he will entertain himself for as many hours as you care to allow him.
If you give the forty-something year old a collection of ingredients and a peaceful kitchen she will entertain herself until the hungry hoards arrive to shatter the tranquillity, and that was one fantastic moussaka if I do say so myself.
So that just leaves the six year old. “Mum I’m bored what can I do? But I don’t want to do that, what else can I do instead? But mu-um. Ooohhhhhh….” There’s always one.