A rest from eyes. So i saw some peoples doing thing, and wanted to try it for myself! Only lights i could find were xmas one. And that cup.. is one from a dinner set my mum got passed down from her grandmother..
The lights are called "Circles of Confusion" because lights do not really make points when focused through a lens, rather they make tiny circles. With some lenses you can actually see the circle when the lights are out of focus.