Ask Lemmy: Which websites (or content) we can mirror?

I'm working on a project called WebMirror that allows visitors to access websites in a decentralised fashion by fetching their content from mirrors (like BitTorrent but) just using a browser (without having to install any additional software including browser extensions).

I've a technology demo for it already (https://webmirror-demo.netlify.app/) but it's mostly interesting from a technical standpoint. I'm trying to find a kind of website and/or content on the Web that would benefit from being mirrored. For example, OpenFreeMap is a great example of that (free map tiles for everyone), but it's just that the dataset is much bigger than my project could support (28.33 million files).

―Bora