Forget about designing your own animals, molecules, cells and labware on powerpoints. A company called Motifolio (I assume there is a host of similar companies out there) provides an array of custom shapes of biomedical objects: the whole mount of 700 scalable and editable clips costs 149 USD.
Nifty — but like other standardized images and customised power point presentations they will probably become tiring after a while. Isn’t there an emerging blackboard retro movement?