I used my Silhouette to make these but they're so easy you could do them in the same amount of time with a pair of scissors or a craft knife.
Just cut out a shape similar to the one below and then decorate and embellish any way you like.
I'll use just about anything to mark my page, even other books! Most often I end up using a receipt or ticket or something else that's less than pretty. I like these bookmarks much better~