I have an embroidery unit for my Bernina. I didn't have that in mind but I bought the machine used as a package deal. I've loved having the embroidery capibility. Mostly, I've done quilt labels, towels and a few shirts. I also did custiom embroidered corner blocks a few months ago for a quilt a friend was commissioned to make and they looked great in the quilt.
I have a quilt planned that will incorporate embroidered blocks, using the Laurel Burch dogs designs on a black background and combined with the matching fabric.