Hi @Ory,
There are 3 that come with Blocs. Which can be accessed via Developer > Bric Builder , in the top menu bar of the app. Once in the Bric Builder ‘add new Bric’ menu (+).
Otherwise you will find most other Free and $$ - 3rd party Custom Brics offered by other developers available by looking through the following link and related posts. Custom Brics - Blocs Forum
Hope that helps you some.