Hiya, can I guess from your profile you're at Hills Road?
There are the obvious things: links to the websites that students go to over and over, uploaded documents your colleagues has been using for years, carefully selected NLN packages using the object module. Have your colleagues already invested time in a website or intranet?
The glossary remains my favorite tool in moodle; you may find it useful, if mercenary, to tailor your definitions to the kinds that appear in exam mark schemes.
I developed a moodle course for A level physics (information and communiction) which can be found on the LSDA Q projects round 2 DVD, that should have made it into your college; that included lessons, quizzes, hot potatoes quizzes.
[ I've got another project on the next disk (developed primarily for using Access in A level computing) that should be in colleges some time in the future - ask your eLearning manager. In the farther future, I'm developing materials for a physically realistic car racing game (Racing Academy), which will also be a free moodle course]
Wiki's are great for group research tasks - e.g. energy resources in physics is a good area for a task to share between a group a students
I've written a few sequences of resources/activities that draw in material from a number of sources: e.g a recent one in physics had an intro (a web page), part of an NLN package to study, followed by a short assignment on it; then the rest of the NLN pack; a simulated practical using an applet on a website; a discussion forum to post the results and a final assignment, being a report (that could potentially be Key Skills evidence).
Hope this helps