On August 20th, I did a presentation of my Workflow Library for FIM 2010 R2.
The session was an introduction and a walkthrough of the activities included in the open source kit - and with a lot of demonstrations. The session was recorded and if you missed it, you can watch it here (https://unifysolutions.jira.com/wiki/display/FIMTEAMCOM/2014-08-20+-+Custom+Workflow+Library)
And if you would like to download a copy of the library, go to CodePlex (https://fimactivitylibrary.codeplex.com/). As mentioned during the presentation, I'll be adding a few more activities to the library in the near future.