Remove spine from old book. Use pages as base to affix scrap paper. Or replace book signatures with same size scrap paper for a journal, scrap book, photo album. Use as a binder for cherished Christmas cards or keepsake of event.
I was trying to figure out how to do a recipe/birthday calendar book but this is a much better idea since birthdays can be added in as new little ones are born into the family! :) Rolodex just got a makeover!