I've only recently gotten (back) into F1 but a lot of the technical stuff is really interesting to read about. Like the Williams FW14, which absolutely dominated for a season before its active suspension technology was banned: https://en.wikipedia.org/wiki/Williams_FW14
Ground skirts, banned, and then Lotus 88 immediately after that also banned. McLaren's multiple brake pedals got banned after like one race?
Pretty sure if you go back to the 70s and earlier there's a long list of banned tech.