As you probably know, you can use the Wayback Machine from the Internet Archive to see what websites looked like years ago. Take a look at what several different sites looked like in the 90s to get a feel for the style of the times. Then, create a  website that mimics that style, so information should be historically accurate but creative. For example if you choose to style your website after websites in 1998, you could talk about the your new discman or do a movie review of Armageddon, maybe create an AOL chatroom page.