In order to create a library of units students could utilize in their classes, conduct a draft, first of US history and then of World History, where students “pick” their unit topic and then are responsible for presenting one from each.
These units would be posted as wikis at the end of the semester so that they’d have almost the complete run of US history and most of world history.

One of my major concerns this semester was that I focused overly much on American history — being an Americanist and all — but knowing that most of my students would be teaching World History during their first year, I’d better change this practice.