After the posts following the pages from here in this thread:

and this thread:

I decided to rebuild the setup shown in the picture of the first step of the 5th grade.

You can see what I have done in the picture and I will let it stand like this no matter either the day- or nighttime nor the weather. I'll close the window when it's raining though.

It doesn't cost me no high amount of money, time or work. But I'm curious if ANYTHING happens, which I somehow doubt. But let's see..

Feel free to comment, make suggestions or criticize.