Miss Elizabeth: If you have a decent webcam they sometimes have 'still photo buttons' on them which you can use to take a quick shot of you. Quality is not the best sometimes but it does for posting avatars.

Do you not have a mobile phone with a camera? Most of them have one these days and they are not bad quality wise now. Some of them even have multiexposure and time delay settings (which are useful when photographing yourself or for action shots such as whipping a sub )

If you were anywhere close I'd offer to come and photograph you using my camera.