If you have a solid torrent setup and a few hundred GBs of free space, you can support Annas Archive by seeding big chunks of the books.

They have massive funds, a few years ago I researched both the worldwide and (my) national wiki foundation. Very transparent. So just don’t expect your money going to the text based wiki (which is smaller than a TB btw).

They will probably invest in wiki related projects like wikimedia, wiktionary and so on.