FlamingText has a text creator that allows you to create graphics with text content.
Compfight is a search engine that finds graphics (aka visualizations) that are fully free under Creative Commons licensing (although some are ShutterStock images and ...)
Freepik has thousands of free icons but their filter search filter system is deceptively difficult to use.
IconArchive has thousands of free icons and a very nice search filtering system.
FreeIconsPNG has thousands of free icons.
GIFCities allows you to search for an animated GIF file.
ReactionGIFs allows you to search for an animated GIF file based on an emotion. You can then use these in your postings.
giphy allows you to search for an animated GIF file based on an emotion. You can then use these in your postings.
Cool Archive has a lot of icons.
Bellsnwhistles has a lot of animated gifs, lines, bullets, etc. arranged in categories.
Web Site Graphics has a lot of links to graphics tools and sites with free graphics for Web sites.
Zeldman's Face Icons - hundreds of real and imaginary people on icons size graphics. The site hasn't been updated in a while since a lot of the graphics have lost their links.
Icon Editor Shootout is a comparison of Icon Editors.
GraphX Kingdom is hard to navigate but has a lot of graphics, especially icons.
Icon Browser has sheets of icons that are great for browsing - not so easy to copy and use.
Barry's Clipart Server is not free.
Realm Graphics has a growing set of very nice graphics. Very good Web page backgrounds section.
free-graphics.com is a good set of icons although it is difficult to browse.
The Free Graphics Store has free graphics and icons, strips, animated gifs, tools, fonts, etc.
MillAnimations has great animations.
The Whole Internet Guide to ClipArt
FreeFoto has free photographs (medium resolution).
Free Backgrounds has some nice backgrounds with those spiffy bars down the left edge.
4YEO - some unusual graphics, a few animated, backgrounds, textures, buttons, etc.
Animated Xmas GIFS
Cover Dude has CD and DVD cover art for free.
FlatIcon has thousands of free icons but you have to credit the author.
Wallpaper and Screen Savers:
Digital Blasphemy has a great collection of computer generated graphics. Great for use as Windows wallpaper.
Visual Paradox has very detailed, imaginative 3-d screen savers.
- CoolText.com allows you to enter text and apply fonts, backgrounds, and color. You can even buttonize it. This cool site has some great free fonts and backgrounds as well
- Colorlab lets you select from the 'color safe' palette and shows the colors that you select within each other so you can see how they'll look together.