You could also try do something with teaching aids. If you want to go interactive and multimedia, you could, if you could be arsed, make a whole load of simulations of chemical, biochemical and physical reactions and stuff, make nice 3d animations, make the atoms moveable with the pointer, allow the user to modify the stuff in the sim, and try to accurately simulate atoms, but include options to make atoms spheres, lettres, or whatever, and colour them not only depening on kind of atom, but also specific atoms so you can easily see where one atom, or molecule goes through the entire reaction.
It'd be one hell of a teaching aid if you made, for instance, an animated drawing of the digestion of proteins. My own biology book fails at that, and I've been redrawing the images, but some of it would be so much clearer if there where animations where people could actually drag the atoms, molecules and enzymes about, mark certain ones with colours, that kind of thing.
Now, a lot of these anims already exist, but if you unified the lot, plus put some effort in working out an intuitive interface, and made the thing interactive enough, this would be very nice indeed.