Speaking of Bluebeam, I’ve also found it very helpful in putting together supplemental materials. I can cut and paste pages; I can edit bits out of pages when I only want students to read, say, a section of an article; I can “staple” a supplement together, add a table of contents in front and number the pages consecutively, and create a single PDF file for them to have, whether or not they want to print it out. Another useful-for-teaching application even without a tablet.
Probably my greatest productivity enhancer in the last year, though, is tabs for Microsoft Office. Why isn’t this a standard feature? Tabs are great for internet browsing; they are also wonderful for working on multiple documents—no more scrolling through that list, and often enough picking the wrong document. I’ve also made Foxit my default PDF viewer because it, too, supports tabs.