Screencasting is a great way to make test reading accommodations more visual and engaging. Screencasting can also be an effective way of scaffolding a reading assignment by previewing the text, demonstrating a reading strategy, and modeling how good readers attack a challenging text. 

My favorite free tool for screencasting is http://screencast-o-matic.com/. With just a few clicks you'll be recording your voice, your cursor movements, and all the action on your computer screen.