I made this one for myself, although it does loose it's descriptivness when in the UI. But I like to have a picture to mentally/automatically go to.

If you want to use it, or any other, put this in the icons folder, then edit the sidepane.htm file on this line to contain the name of the png image.

<moi:CommandButton icon="icons/Nsided.png" command="nsided"><moi:Text textid="Nsided"></moi:CommandButton>