Also one of the things from the Advent calendar filling from getdigital.de: A wall tattoo that you can stick to the wall around a window that looks like a Windows window:
Sticking it to the wall takes some time, but it is not really difficult: You just need to put the individual parts together and likely cut the pieces smaller so that they exactly fit to the size of your window. I thought it would be more difficult or that the result would be not so good at the places where two pieces are right next to each other. In my case I had to cut out a piece of the wall tattoo because of a hool already places at the wall exactly over the window where the wall tattoo needed to be. It was also no problem!
I like the result, especially when the roller shutter is closed and the ‘outside world’ is ‘closed’.