My church recently set up some shelves in a room near the gathering space and placed an announcement in the weekly bulletin. They're asking parishioners to donate all sorts of books and invite them to come in and borrow some books too.
I've been donating some books which I've read and are nice but don't really want to keep forever. I bought 4 books last week and I have 5 more to bring this weekend. I'll probably check out their library to see if there's something interesting to borrow.
If you have any books to donate (and of course, are in my area) drop me a line and I'll pick it up one of these days.