If you have been a student ever then this is something quite obvious that you would be having some books in your house. Hence if you have some school going kids now then there will be some more books adding up to the book shelves. As your kids will progress more in their academics, there will be some more weight in the book shelf. You may want to discard them if you have read the essay by J.C Squire “On Destroying Books” but something stops you from doing so. Nevertheless, one good way of keeping them neatly is put them in a bookcase which can be constructed quite easily having a few things available in your house.
Two pairs of wooden boards of equal lengths for top, bottom and sides
Two to three wooden boards or plywood for shelves
Nails of small size