I know I'm not posting much about #mnm (https://mnm.social) these days and the project is in maintenance mode.
However, someone asked me to release a dump of the data I gathered about Mastodon instances, to use it for a reasearch project and I thought you may be interested.
This is more than a year of anonymous data about instances, users, status, localisation, etc.
Instructions to download and use the dumps are available here: