Clip art

Clip art can be a real help in dressing up otherwise bland reports, newsletters and the like. In the old days (like, 10 years ago), I bought Corel Draw simply to get access to a good collection of clip art and typefaces. This has been rendered completely redundant by the internet, where you can find almost unlimited resources for free. There are scads of sites containing clip art these days, although the quality is pretty awful in many cases. Here are few in my browser's address book:
i-clipart says it has 30,000+ images in its collection.
A major resource is at Public Domain Clip Art, with 25,000+.
A newly revamped site is the Open Clipart project, which now has 11,000+ images.
And of course we can't ignore the 50,000 or so images and sounds on offer at Microsoft, for use in Word, Publisher, etc.