Anecdotal : move to a really far away country (the remote outskirts of Indonesia, in my case, but I imagine the highlands of Cameroon or tea plantations in East

Anecdotal : move to a really far away country (the remote outskirts of Indonesia, in my case, but I imagine the highlands of Cameroon or tea plantations in Eastern Bhutan would work just as well), bring nothing but your father's (!) old children's books (on account of which I know to this day that to operate a home built radio receiver one must "scratch" at a "crystal" until one gets a "signal") and wait what happens). While there is enough to do there in the way of outdoors-y activities ("let's climb that there volcano!"), intellectual stimulation will have to come not from the internet, computer games or even television (you would not believe how little worthwhile there is to see on television channels aimed at the remote parts of third world countries) but from good old fashioned books. As a result, if you (that would be me) have been subjected to such a regimen in your childhood, you will always, always, continue to hold good old fashioned books as belonging to a quite, quite dear portion of your heart. To make it a little less anecdotal, by the way, I've seen a similar love of books in others who have grown up in this way.