The Sugru itself does not have enough structural strength to act as a handle. I used the smallest hanger tape (also known as plumber's tape or plumber's strap) I could find at the hardware store to create the backbone of the handle.
I separated a piece long enough to make a ring the size I wanted the handle to be by using a pair of pliers to bend the strap back and forth till it broke. I flattened out the rough edges.
I used a small bottle of appropriate size to bend the strap into a circle without kinks.