this might be updated over time as i find more cool stuff, probably not though lol
sm64js: an online mario 64 thing that lets you play online with other people (you need to "legally aquire" an american mario 64 rom first)
sm64js.com
webtv redialed: a revival server for WebTV (the 90´s equivilent of a fire stick, made by some cool guys and bought by microsoft)
go to webtv.zone for more information (and if you join, email me! i'm asdaf59 on there)
that's all i can think of for now