There was a lot of interest in the “Icon Archive” post from yesterday. I found another image and icon site that might have even more potential for educators. Icon Bug provides free images for download in a variety of formats. All images are licensed and like Icon Archive, the type of license is given for each image. The big advantage for Icon Bug is the ability to download single images. On Icon Archive, you end up downloading collections. The site design is also much cleaner without the shady looking advertising.
Click on the logo to have a look: