I've uploaded some avatar galleries that you can select from for your avatar, if you are too lazy to find one on your own that is.
To view the gallery, go to your User Control Panel at the link at the top. Then select the Profile tab and then the Edit Avatar tab. In the Avatar panel, click "Display gallery" to show the avatars available. Select the one you want and then click Submit at the bottom. To toggle through the different avatar categories, select the category you want at the top and click "Go".