Check out the thread " screenshot of people's droid desktops". There's plenty of links to icons. And to get them to show up in the gallery, I just made a folder "Icons" on my sd and place them there.
You can also google "LP icons". It will give you some links.
to make the gallery see it:
- mount SD card onto computer
- Create a new folder on your SD card, the root of it, called Icons or whatever you wanna name it.
- eject, umount, and open up your gallery. there ya go!
xda has a TON. Like close to 500 sets. It's where I've been getting most of mine lately. You could spend hours upon hours looking through them all.
Also there's a "launcher pro icons" app that's pretty good for docks. All the icons within the app are the same except for different color combinations.