Genetically engineer turtles so they grow the PEV cells on their backs and display data on their tummies. Add a static memory interface that reproduces along with them, containing the critical knowledge you want to save. Make them resistant to disease, radiation, drought, and famine (turtles are probably a good platform to start from). Also, make them not taste good.
Extra points if you can figure out how to let them communicate via wireless so they can share any new knowledge any of them acquires.
(Talk about the world being carried on the back of turtles!)
Or we could each take responsibility for memorizing some quantity of knowledge and pass it along in an oral tradition...
