I also have a stamp and love it – however my book plates are still in my books that my mom passed down (though some are falling out, the sticky wore off after 30+ years). My son actually commented on them today – he asked what my name used to be and I told him what my maiden name was – he said “I have seen that in all our books on the caterpillar stickers”
I work for Family Christian Stores. We can imprint most books or make book plates. They are $5/line (up to 25 letters). They are heat imprinted with foil. (If you happen to have a store in your area.)