In a Wales-first (and possibly UK-first?) I've created a micro-server for Mastodon to enable local primary school children to explore social media in a safe environment. It's not connected to any other server, so only children and teachers from that school can create an account.
I'll be sharing my experiences in a blog post in due course, in case it's of interest to others. Would love to have another Welsh language primary school interested so we could have multiple schools collaborating!