I, of course, have plenty of vivid memories from childhood. But I've also been fortunate to be able to travel in all senses - quick tourist vacation, a few months backpacking, and multi-year slow travel where I mostly just lived in different places (different nature settings, towns, cities etc).
Tourism is generally forgettable and I don't recommend it to anyone - save the money and do something where you live.
Backpacking feels meaningful in the moment, but is also largely forgettable. I truly have almost no meaningful memories from 2 separate 2 month trips in Europe and southeast Asia.
The slow travel is most recent, was the most "boring" but also, I think, most meaningful as I was explicitly focused on self-reflection and discovery of a more meaningful way to live after many years (or a lifetime, really) of aiming to be a better cog in the machine. I don't have a lot of "memories" - highlights that I reminisce about - from it, but rather various phase shifts/epiphanies in my understanding of myself, life, the world etc...
I now live in relative poverty in a poor country where I have been working for 7+ years to develop a project for the benefit of the multitudes who can't even conceive of being able to do anything that I've just describe. And for whom even childhood is rather joy and wonder-less, because of how hard life is. I'm mostly glued to my computer again, but it's not soul sucking in the way it was in a cubicle with spreadsheets - because the purpose is meaningful.
I do miss the slow travel days - they were absolutely the most enjoyable period of my life. But I've also met people who have done that for decades and they're profoundly sad people - they have no roots or connections anywhere, no meaningful vocation, etc.
A meaningful life is to be actively involved in the sorrows of the world, with joy.
Still, I really ought to get a bit more play and exploration back into my life.
In the past year, I've been coaching teen soccer/football and that has been wonderful. Both to help me fix my desk-broken body, as well as to help them, principally, become better humans. To succeed on the field they need to develop the same characteristics needed to succeed in life - discipline, determination, cooperation, empathy, solidarity, creativity, perspective, vision, patience, and more. The world around them is largely bereft of such things, so it has been challenging.
But they're vastly better at playing now than a year ago, and I've heard they generally behave better at home as well. The difference between this and the article's version of living through your kids is a) they're not my kids and b) I'm focused on helping them become proper adults via play, whereas the article is largely about recreating Neverland where everything is childish. I expect it'll be unlikely that I'll instill much community spirit in them - though, perhaps we'll incorporate some community service into the training at some point. But it all does seem meaningful.
Still, the real focus and crux of my life is the overarching project to help people everywhere become more self-sufficient. Hopefully I'll be finally ready in the next year or so to "go public" with it, and that people will be receptive to using it, collaborating, helping etc...