This one is quite clever also!!
Sometimes bookmarks fall out of your book, and you end up thumbing through chapters trying to find your place.
Useful also for favorite cookbooks to make your most used recipes.Avoid these annoyances with placeholders that fit onto the corners of any page.
To make one, cut a bottom corner from an unguesseted paper bag(the kind card shops use) or a colorful envelope. This one is about 2 inches from corner to corner.
Create several to track you best loved recipes or when planning the menu for a special dinner