Just saying, we'll have to watch what kind of technological equipment we show in the series, because in the 90s no one had an iPod or an iPhone, and all the computers were dinosaurs. Probably no elmos either, we'll have to see if the school has any of those really old projectors you write on with expo markers and transparent paper should we choose to use that.
I suggest for clothing a lot of baggy clothing, flannel shirts, sweatshirts, and solid colors. This seems to be the style of the 90s, along with leggings and big tennis shoes. The internet will be a fantastic source for all of our costuming needs.
And big glasses. Don't forget those attractive things either
If we're using the library, we'll have to make a card catalog, because there was no such thing as Destiny Quest (and card catalogs are annoying).
I doubt I've thought of everything, but more will come up as we progress through pre-production.