I've given some thought to that. The lifetime of consumer electronics is limited; with modern lead-free solders being mandated by the Environazis, the "tin whisker" problem has cut the life of some items down to less than ten years. EPROMs start to die at around 20 years. The official lifespan of a CD-ROM is ten years; for pre-recorded ones I've had them start developing unrecoverable errors at 15 years, sometimes less than 1 for the ones you can burn yourself.
Paper books in waterproof packaging, cached at some useful location, are better... but many books are printed on "acid paper", where the sulfuric acid isn't completely washed out during the pulp processing. If you have books or magazines that turned brown and crumbly over time, they're on acid paper. Not a damned thing you can do about it.
The "correct" solution would appear to be microfilm or microfiche, and to rig a mirror to use sunlight to light up the display. But I never followed up on that.
A thumbdrive or DVD can pack a huge amount of printed information, pictures, and even movies, though. There were plans for a ruggedized laptop with a hand crank to be sold to developing countries for educational purposes; if they ever existed, one of those might be very useful.