cool sites

game related

noclip.website - lets you view and look around maps from many games with a free camera
xenogearsmapviewer.com - same premise as noclip, but this lets you view xenogears maps
gamefashionarchive.net - lets you view specific clothing of vg characters in 3d
emulation.gametechwiki.com - helpful website that goes indepth on emulators for all sorts of systems
sm64js.com - port of super mario 64 to the web, includes vanilla game and a mmo type mode. requires rom of the game
github.com/k4zmu2a/SpaceCadetPinball - native port of the classic windows xp pinball game to modern computers as well as the web and ps vita
frontiernav.jahed.dev - basically a compendium of information for a bunch of different games (most notably the xenoblade games). includes interactive maps, tables of relevant data, etc etc.

general tech

3.onj.me/phonetones/unzipped - raw ringtone files for all sorts of phones
textfiles.com - text files from systems in the 70s/80s
startyourownisp.com - details how to start your own isp, if you're curious about the process

interesting/old forums

clublexus.com/forums - forum where lexus fans talk about their lexuses...? not exactly sure what goes on here myself but its interesting nonetheless
ultnintendo.proboards.com - old nintendo forum with peak activity during the early/mid 2000s

preserving old net

theoldnet.com - functionally it's a wayback machine viewer that is able to be visited on old computers
restorativland.org - dedicated to preserving old sites hosted on free hosting services way back when like geocities
oldgoogle.neocities.org - allows you to use the google search engine under its older looks

online-based windows imitations
no descriptions b/c all self explanatory

web directories
no descriptions b/c all self explanatory