I recently worked with a company called Sincerely, an app company that specializes in greeting cards. They recently announced their new app, Sincerely Ink: Christmas & Holiday Cards, for which I did a few designs. I think it's cool because you can customize the cards with photos you take with your phone, then the company will print real postcards of your design which you can send out as holiday cards. Pretty cool!
The app is available soon and once it's out I'll post some of the designs I did! Stay tuned!