Here are a few...

Every noise at once. Really just check it out if you find music interesting. Also fuck spotify.
https://everynoise.com/

Amazing collection of classic puzzle games
https://www.chiark.greenend.org.uk/~sgtatham/puzzles/

Absorbing and enlightening even if math and physics aren't your thing
https://falstad.com/mathphysics.html

An interconnected way of learning about and understanding mental health
https://integralguide.com/About

Surprising amount to do, lots of nostalgia if you're old enough
https://www.windows93.net/
Another old PC emulator in your browser
https://www.pcjs.org/blog/2015/09/21/

All the old robots. Click them.
https://theoldrobots.com/

might need some content warnings, but undeniably fascinating, sometimes very revealing
https://rarehistoricalphotos.com/

An index of Aesthetics
https://cari.institute/aesthetics

brr - an Antarctica blog
https://brr.fyi/

Cat bounce!
https://cat-bounce.com/

https://archiveofourown.org/ is pretty cool i guess, it's the one i use most after hexbear

Oh yeah, there are a metric fuck ton of cool and fun websites.

One of my favorite is Floor 796 — https://floor796.com/ — it's a... mosaic? I dunno. There's a word for what it is. An image with tons of references to other things just packed in. Things are being added all the time, and they have a changelog. This is better opened on a device with a big screen, like a tablet or a computer.

Then there's the Neal.fun website — https://neal.fun/ — which has a ton of things to do.

So that's a start!

P.S. Oh yeah, this too — https://www.dearnextvisitor.com/

I hear you can do anything at zombo.com

The internet archive has a whole bunch interesting stuff to go through. It's even got a whole bunch of flash games you could download and play using Ruffle. Loads of other junk too.

RSS reader with a bunch of blogs.

There was a list of websites that Meta was scraping for AI (it included Lemmy instances like us, it was posted a while ago), it's mostly all niche real human websites, so just start opening up random links.

Yeah this is getting a bookmark I'll never look at again . Good post

If you’re into music and coding, strudel.cc is awesome. I’ve been watching Switch Angel shorts on YouTube and treating them like tutorials since you can just copy her code and make the same music she’s making. But you can also just look at the tutorials or the reference songs and then mess around.

fun chess puzles

https://lichess.org/training/mix

competetive, easy access pokemon

https://play.pokemonshowdown.com/

both of these are available on browser even on mobile

go look at those DONG videos on the vsauce channel. “stuff to Do Online Now, Guys”. idk if hes still around but those videos were just about cool fun websites around the internet. i found tons of cool shit from those videos

Yeah check this out: https://www.pointlesssites.com/

My podcast https://www.patreon.com/c/BrokenWind

I play a game called chicken smoothie, you basically just collect pets and there’s events. Lots of collecting and trading, tons of different artists so all the pets are unique, etc.

Nope, it’d probably be best if we all just abandoned it. ;)

https://neal.fun/not-a-robot/

Does Wisel Wisel count as "social media?" Like the internet of yore, it has some chuckle-worthy stuff...

I read a lot of serial web fiction on https://royalroad.com/ and (to a lesser degree) https://scribblehub.com/

Universal Paperclips. Go in blind.

I like browsing https://neocities.org/ when im bored

https://burymewithmymoney.com/