Okay, so your recipient doesn't need any more beauty products (really, though?) Or maybe you need to stock up on some host(ess) gifts that can please either gender. Or maybe you just want to get all of your shopping done on Amazon. Whatever, no judgment here.
A few rules on buying books as presents: hardcover only, buy new, unless it's a first edition (but first editions are pretty overrated), don't give a Kindle without loading it with a few books first, and don't follow up with the recipient--if they've read/liked the book, they'll let you know.