This fun cross stitch border from LoveCrafts is described as Romanian but I think a lot of different cultures use similar designs.
It would be cute for a bookmark, or you can add it as a border or frame for another project. As shown it is a solid color and you could repeat the pattern to make it longer. It would also be pretty in a multicolored yarn if you don’t want to keep it a single color.
Download the free pattern (you have to create an account to get it) from LoveCrafts.