Adopt a Book at the British Library helps fund conservation work. They have just added some Gothic titles, to tie in with a celebration of 250 years of Gothic writing - Terror and wonder (exhibition opening soon). I really like this as a way of helping provide funding for a library, and I like the way the British Library is thinking about it, including having a blog post about one of the conservators - see Meet adopt a book conservator Rick Brown.
You could also think about supporting this for All hallows read, as it is giving a book, but just a bit differently.
Also think about giving a book for All hallows read - as reading horror is important. And think about how you promote reading horror this October, at your library.