Icons for your Architecture Diagrams

If you have been wondering about where to find Icons for your Architecture Diagrams/ Presentations, here are few options.

1. Try Open Clipart, but get 0.18 (new version, categories are not good and very hard to find something)
2. If you are in Ubuntu, try /usr/share/icons/gnome/scalable, there is lot of .svg files there
3. Look for wikipedia entry, images in there are reusable (same for wikimedia)
4. Google with create commons settings