By Anonymous 411
First Line of Defense
Store small things, like books, in plastic bags. Plastic baggies are available in grocery stores, Walmart, dollar stores and others. These typically come in two thicknesses: regular bags and freezer bags (thicker, better). These bags come in quart, gallon, and now two gallon sizes. Be sure to choose the size baggy that does not stress the baggy as this could cause a hole to develop over time. Better still would be to vacuum seal these items in vacuum seal bags. These machines are readily available where small kitchen appliances are available. The sealing should be done on days with low humidity. You could also purchase small desiccant packs to store in the back with the book or device. If you could eliminate the oxygen from the bag by use of an inert gas such as nitrogen, or by use of oxygen absorbers, that would be better. I have read about using a bit of dry ice in food buckets. Perhaps that technique would work here. I don’t know. Sealing each book or device in two or more bags would be useful.
Second Line of Defense
A structural container to prevent damage by water or fire. A wooden bookcase or open metal shelves would not provide much protection from fire. Hopefully the plastic bags will prevent water damage. Better would be some closed container such as a metal file cabinet. Better still would be a media file cabinet which are supposed to prevent paper from burning some minimum time, usually two hours. A safe would be better still. The problem with file cabinets and safes is that they can be locked. But keys and combination can easily be lost, or over time the locks could become rusted and unlockable, then the cabinet or especially safe will be impossible to break into. With these containers, perhaps it would be better to have a locksmith remove the locks. Of course, you still want the doors and drawers to shut.
Another option would be to put the books or devices in square plastic buckets with tight sealing lids. Round buckets could also be used but seem less efficient for books. Square buckets can be found here, with lids here. Round buckets and lids here.
Third Line of Defense
Put the containers in an underground, concrete, bunker. Make sure water will drain out of the bunker, naturally, in case it should become filled with water. The same point about locks above applies to locking bunkers.
Wherever you store books, be sure to include simple books teaching the user to read. Also include a dictionary and technical dictionaries on the subjects stored in each container. It might be 100 years or more before your library is discovered and by that time reading may have been lost.