I doubt you haven’t noticed that I love incandescent bulbs! And right now they are not only HOT but so one of the cheapest ways to add class and edge to your home!
For Copenhagen followers go to the nearest and ask for incandescent bulbs (glødepærer eller de gamble kultrådspærer) or buy them even cheaper on http://www.greenline.dk. All you need is what you see!
Here is how I have used them on the stairway!