Proctor and Gamble have a very pleasing diagram of the evolution of their products – a variant on the usual history timeline. Since products spawn in multiple directions, it obviously isn’t as linear as a history timeline tends to be.
The small blue circles expand on rollover to explain – for example – how their knowledge of bleaching as used in detergents led to the development of dental bleaching kits. Very interesting indeed; so much so, that I’d like to see the image expandable, so that I can see the images of the products properly.
Could you use this sort of diagram on your site? Almost all products go through this kind of evolution. It might have other applications, too, such as the evolution of the company through mergers, acquisitions and disposals.