The Hunt for the Death Valley Germans always comes up in these threads. I've read through it a couple times over the years, and probably will again at some point.

https://www.otherhand.org/home-page/search-and-rescue/the-hu...

If you like the outdoors, this 16-years running thread is a good, very long rabbit hole.

The premise is "What's the weirdest thing you found in the woods when you were out in the middle of nowhere?". It has everything from Bigfoot, to Old West stuff, to UFOs, to cultists, to dead bodies.

https://www.ifish.net/threads/weird-findings-in-the-woods.14...

I first read it over several days and check back every year or so for new posts.

The SCP Foundation[1] always gives me fond memories of growing up watching the X-Files and similar shows.

Also TV Tropes[2] is fun to learn how derivative or novel aspects of your favorite shows are.

1: https://scp-wiki.wikidot.com/

2: https://tvtropes.org/

Always an amazing read for me

https://forum.expeditionportal.com/threads/democratic-republ...

https://tcrf.net/ — it’s cool to get a window into the creative process

https://www.folklore.org/

chinacat's massive thumbprint lsd story from shroomery.org

https://www.shroomery.org/forums/showflat.php/Cat/0/Number/1...

Actually archive.org has a tons of interesting stuffs. I downloaded all Dragon magazines and many ADND 2e modules so that once I semi-retired I can convert some modules into computer games, given that we have an appropriate engine then (Neverwinter nights is a good one but it's going to be too old 15 years from now).

https://www.are.na/ as a network of connected channels.

Random example channel: https://www.are.na/krish/visions-of-the-web

The Digital Antiquarian has a _lot_ of interesting writing about the early history of video gaming and home computing. https://www.filfre.net/sitemap/ has the full list of posts, starting from the beginning of the blog; the history they cover is mostly in chronological order.

Old maps and stuff related to some places I go often.

I've found old bottles and to date them I started looking for archives of old newspapers. Worst use of my time, haha

https://theforest.link/

this site redirects you to random cool websites.

Mentour Pilot series in YouTube explaining what happened behind many airplane crashes

cicada 3301 is up there

The Bobbit Worm Chronicles: https://www.michiganreefers.com/threads/the-bobbit-worm-chro...

tldr: a guy spends a LONG time trying to kill a bobbit worm in his fish tank

If only StumbleUpon was still around...

why nobody mentions conspiracy theories? i think its a great mental exercise

Askreddit subreddit

Ask.metafilter.com is a good one