Here are some links to some cool shit
Thank me later lol

Itch.io
You can download a lotta games from here, also they are very for the creator which I like.
Spriters Resource
A resource of a lot of videogame sprites. Very handy if you are trying to get some inspiration or need some sprites in order to mimic a style.
Lospec
A website with a lot of palletes. Like a lot. Also, they have some tutorials on there if you wanna know how to do something specific.
YAL's Pixel Font Converter
A tool that you can make .ttf pixel art fonts. Super useful if you are making games or just want a custom font.
SuperFuckingMario.com
SuperFuckingMario.com.
Rotating Sandwiches
Literally just very high res gifs of rotating sandwiches.