I have a gazillion books in our house. Fiction, non-fiction, reference, homeschooling, just-for-fun. I go to used book sales on a regular basis and I'm always adding to the collection.
Sometimes it would be really helpful to me to see a list of these books to plan lessons. Or to see if I already own that book before I buy it used off a used homeschooling group.
I did what many wise homeschooling moms do to solve this problem: Assigned it to techno-dad.
Here is his solution.