As a parent I very much agree. And for grown-up children too.
On my desk I have a small tin containing small wooden blocks and planks, arches, etc. I get lots of play value from them - when my thinking is blocked, or if I just want to fool around and not think at all. I'm in my mid fifties.
And over at my climbing club's off-grid climbing hut we have a big box of over-sized, home made jenga blocks. Pretty-much everyone plays with them: not only jenga, but also just building structures or giant domino runs or whatever.
We all need to play sometimes.