Not really experiments, but two brief articles I had been meaning to write for some time, simply to share some interesting approaches to developing Features for SharePoint:

• A handy approach to automating your build process when writing a Feature: deactivation, uninstallation, unregistration, registration, installation, activation and recycling the application pool, all in one easy step.
  
  
• Automatically extract data from an InfoPath form when uploaded to a SharePoint Form Library. Indispensable approach, especially when automating business processes or integrating non-homogenous enterprise applications.