I know the majority of people tend to be focused on Spelljammer campaigns for Dungeons & Dragons, but if you’re looking more towards Eberron, I have a supplement to consider. Joseph Meehan recently released Cultures of Thrane which aims to provide a different lens for exploring the nation of Thrane that looks at the history and religion of the nation, but more importantly, the supplement looks at the people and cultures that have inhabited the land. It is a nice supplement for a DM running an Eberron campaign that wants a bit more nuance in their version of Thrane.
Cultures of Thrane is a supplement for the Eberron campaign setting, exploring the theocratic nation of Thrane through a new lens. Included is not just an exploration of the nation’s history and religion, but the many peoples who live here and in-depth expansions on the lore of the many cities and regions of Thrane.
You can purchase Cultures of Thrane from DMs Guild (affiliate link) for $4.99 or access it through the full-size preview.