Custom "from the library of" plates, designed like the ones in hundred-year-old books. Print a sheet, glue them in, become the person people are afraid to not return books to.
Design a classic ex libris bookplate, photographed pasted inside the front cover of an old hardcover book.
The owner and their taste: [name + 2-3 things that define their reading life, e.g. "reads by the woodstove, always three mysteries deep, tea beyond reason"]
Bookplate rule
