Many designs available. Embroidery Library is my go to for great designs. They also have a service to divide designs to be able to stitch large designs in a smaller hoop.
Originally Posted by
PaperPrincess
Since the 4" machines were the first introduced, there are lots and lots and lots of designs available. Monogramming is also a great thing to do.
Here's a good site to get an idea of designs available:
http://www.emblibrary.com/EL/default.aspx