HELP!! I have been asked to make a science type cake for a 3rd graders birthday. Has anyone made such a cake? And if so, do you have photos or directions on how to make one?

http://www.cakecentral.com/modules.php?name=coppermine&file=displayimage&meta=search&search=scientist&cat=0&pos=6&search=scientist

Here's a link to a really cool scientist cake. I made a version of this for a doctor-not nearly as good at the original, though.