There are a couple of online resources that are very helpful for finding timely and controversial legal topics that often make good notes.
Several databases have options for creating automatic search alerts to update you when a new item is added to the database that fits a particular set of search criteria. After doing your preliminary research for a paper or note, setting up a search alert based on your topic will allow you to know if there have been any new cases decided or articles published. This can also help with finding a topic if you are interested in a particular area and want something timely to write about. Each of the links below has instructions for setting up a search alert in the appropriate database.