Thank you everyone for all the very good suggestions
The link below takes you to the Official Notre Dame Online Store. You can get get some ideas there. The link opens on the baby blanket, bib, and hat page.
I found a few freebies for you. Good luck
Another possibilty is to register at emboirderydesigns.com; you can dl 3 freebies per week. They have some leprechauns (also one I get once at sweetembroidery; this was my first idea if you only need a single design).
I think the "Lucky Leprechauns" from emblibrary would be good for a baby and the daddy ;o)
They have 2 sizes (the link is for the small)
there is a door sign with a big one, if yo visit adesigninstitches.com, it will cost you about 2.00, and could be used as applique.****