I found some St. Patty book marks. They are FSL, 8 for $7.99 Very nice
Try the link below. They have a large selection of FSL bookmarks and they stitch out very well. I did link with the first listing by correcting it.
Forget my comments. I finally got the original link corrected! It does go there. I can't deleted these other message. Sorry about the confusion!
It's not free, but at Embroidery Library they have the prettiest FSL shamrocks that make beautiful bookmarks and I think they are just $1 now. One of them has a little loop for adding a ribbon. They stitch out great in about half an hour.
This is a link to the result of searching "bookmarks" in the left search engine.
I know there a lot of links to designs that could be used as "blanks" that you could add your own design to.
1. Simple Knot Border Celtic -go to link, sign in, come back and click link again.
If you do this on felt or sturdy non woven interfacing it should work to cut out around the edge.
I checked out most of my favorite sites and couldn't find any but I've been getting a lot of new St. Patty designs daily. Maybe you could go to one of your favorite sites that does digitizing and ask them to create one for you.