Here are the pictures I have used at some time for my profile.  I make every picture myself either on my computer or on paper which is then scanned in.

Corporate Onion

This so far has been my most used profile image, It is a pencil and paper drawing that I created when I was around 15, 16 or 17 (I can't remember).  The actual drawing shows much more but unfortunately this was the only part that was scanned at reasonable quality before I lost the actual picture.

Crazy Onion, 

This was my first profile picture I made using the standard paint program as you can see it's an onion with a face and is designed to be happily funny and joking around.

Clubbin Onion:

Here a little more effort was put in to the image using many different gradient fills to give the image a much nicer feel than just normal fills.  I quite enjoy people commenting on my profile so I added "tell me what u think" to the image.  The onion head still remains but this time it is decorated with glasses, facial hair and a mono brow.