Light orb photography

Using a small LED key ring (attached to the end of a long string) is a prop we used to achieve this. By waving this string in circular motions in the space of a couple of seconds is how created the light orbs.
Setting the camera details of the ISO 100 at 20 or 30 seconds shutter speed.
Marking a circle point helped us to have a consecutive circle in the same place so it would not go out of synch. Creating a fully 360 degree circle gives us a 3 dimensional illusion in which it makes it more visually entertaining.