There is no way to store calendar and chess game data to #Mastodon.
But if Mastodon use SoLiD for its infrestructure, a #SoLiD App can read users’ microblogs shared by Mastodon, and can combine them with calendar event and chess game event created by other Apps. 😃😃
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!