It’s not the early internet, but a lot of websites in the 00s (when I started using it) let you customize your profile. We all had horrible CSS and an autoplay song that only we liked on our Myspace profiles and it was great. Flash was both a buggy mess that could introduce viruses to your computer and an amazing outlet for creativity that I don’t think has been replaced. It was a lot less centralized and you were only being tracked across the whole internet by the NSA and not every internet company too.