Do you ever use bookplates in your books? I've had various bookplates over the years, but sometimes find them difficult to use because I feel like I should save them for special books. Then, of course, when I have a special book, I hate to put a permanent bookplate in it. It's a vicious cycle that I'm sure would only be fed by these bookplates by Felix Doolittle that I just discovered. They're so pretty that they would call for a very special book indeed.
And just for fun, a different kind of bookplate (via here).