Shopping your bookshelves

I'm floundering a bit trying to figure out what I'm in the mood to read next. There are a couple of books that have come out in the past few months that I'd like to read, but I haven't yet made it to the library here, and I'm trying to be a little conservative in my e-book spending. I've always been a mostly public library user when it comes to my voracious reading habit (no surprise that I ended up pursuing a career in public libraries), but I'm a sucker for used books stores and library book sales. Because of this -- and because I had a hard time saying no to free ARCs at the library I worked at -- I've got quite a few books on my bookshelf that I've never read. Before our move, I went through with a critical eye and pulled out a big stack that I decided realistically I'd probably never get around to reading, or I read them and had no real desire to keep a copy. Now I'm (somewhat) determined to shop my bookshelves: reading those books that have been languishing for months or years. So when I'm looking for something to read with no clear direction (or waiting to get my grubby hands on a copy of Sinner by Maggie Steifvater), I'm trying to shop my shelves. Right now I've got a World War II novel on deck. It hasn't grabbed me yet, but with all our moving and travel and company lately I haven't had more than 5-10 minutes at a time to read it. So I'm still giving it a chance.