Welcome Ashvura,
A very interesting post, I’ve also had some of those “big and small” experiences (along with quite a few other people on this forum), I saw everything in a sort of rickety miniature, with all the cars looking like hotwheels, It was a total mind blower! Anyway, glad you’re here, it looks like you’ll add a lot to the forum. 
Btw, here is a link to a discussion we had on the “big and small” thing. You might find it interesting.
https://community.ld4all.com/t/everything-gets-really-small-and-far-away-what-is-that/6679
Hey Luminar,
Welcome to the forum! 