Here I'll link to / list things that I consider to be N1 level as I find them, since everyone needs reading practice but even at N1 we're still not at "native level" yet. N1 is essentially made up of archaic grammar, irregular or rare kanji usage, jargon, and extremely poetic stuff/flowery writing.

Stories:
• 愛よ愛 by 岡本かの子: http://www.aozora.gr.jp/cards/000076/files/4554_15427.html

Fanfics:
• (Kabaneri) https://www.pixiv.net/novel/show.php?id=7666616

Watching:
• 沖縄と核 (Documentary on America keeping atomic missiles/bombs in Okinawa): https://www.youtube.com/watch?v=vFkBWgsDuow

List of stuff I think is N2 level, as I find them. At N2 you can puzzle out probably anything in normal, modern, everyday-ish (not extremely poetic etc) Japanese as long as you have a dictionary.

Fanfics:
• (Kabaneri): https://www.pixiv.net/novel/show.php?id=8192324

Website pages:
• http://www.family.co.jp/company/recruit/staff/interview/foreigner.html
• http://www.family.co.jp/company/recruit/staff/interview/inexperienced.html

Watching:
(Go look at the animelon list)