RecordSelect – a standalone plugin that integrates with Active Scaffold to provide a scalable “add from existing” option on subforms. Can also be used for form_ui = :record_select.
Active Scaffold List Eval – A plugin that provides a mechanism for adding column helper methods in the controller instead of in a standard controller helper module
Csv Export Action Plugin – Modified version of the above project that can be dropped in as a plugin. Configurable and uses FasterCSV in the default implementation