Since two three days I was playing with MooTools and created something interesting (i Feel). This may not be useful for any web application, but yes the concepts used here will surely useful for you while your working with the MooTools.
I have used MooTools Tween and Morph effect to make the element moving. Have a look at the below image which consist the element I have used for this demo.
Have a look at the working demo here. MooTools Fun
What you think on this demo?