I know you can list all known models from the ComposeDB CLI and some Ceramic explorers like S3 and CerScan show a “leaderboard” of the most used models.
But I’ve heard from a lot of developers in the community that it would also be helpful to have a more curated list of useful and/or popular ComposeDB data models backed by good data sets that they could use when building with Ceramic.
Maybe we could crowd-source a thread of data models from the community? 
Share the data models used by your project and a brief description below… or comment on other data models!