There are pages and more pages here on Cute and the sister sites. So many designs! Using one of the many letters offered with a design that reminds you of them or them of you...
I think there is a $3 minimum to pay for individual designs
This is a freebie. Go to Embroidery Library and sign up for the Christmas Club. She will offer quite a few free designs if she continues as she has done in other years, and there are luscious for sale designs on Christmas and winter themes. After that, I would go to Anita Goodesign - there's a lifetime of Christmas sets there! High quality digitizing, too and perfect art. Have fun!