Books with abnormal formatting?

I've asked this question on another forum before, and was curious if anyone else here has read books that do this, but have you ever come across the book that doesn't always follow the conventional "left to right, top to bottom" format (or whatever other formats books in your country usually follow e.g. right to left) most books have? Changing fonts, changing directions, odd structuring, anything? I suppose this might be more of a typical phenomenon in things like childrens' books, but I have heard of some that incorporate it (I believe House of Leaves is the title of one such book?). The most obvious examples I can think up are, as you might expect, childrens' books - specifically the Charlie and Lola series:

Uh... yeah, I don't know what else to add- send in books that are wacky and weird with visual presentation pls *does my best attempt at pleading puppy eyes*

i can't remember the name of the book but i once read one where some pages were upside down and when you read them, it gave the perspective of the other main character. you are right about house of leaves though !! 

what a fun question twin!

there's this book by Murakami that idk if really counts, but the pages aren't like a normal book. while still following the common font structure, it's the creativity within the pages organization that shines the most!

i highly recommend you to check out! :]

Probably not the type of thing you’re talking about but Hubert Selby Jr had a very unique writing style! He pretty much wrote everything in one big paragraph, never used quotations for dialogue, would use a slash in place of an apostrophe (so “we’ll” would be we/ll), and would often not use apostrophes in general (“you’re” would be written as youre for example). He’s got a very stream of consciousness style as well. 

I feel like American Elsewhere by Robert Jackson Bennett kinda fits. He uses different fonts and stuff for different sections and stuff. The main character is also able to see two realities at once, so during those moments he used parentheses to denote the realities she's viewing. There are some sections framed as transcripts as well. It's a lengthy one but a good read