Once that the holidays are (will be) over, how about a photo walk in Bonn? We will meet just before sunset (16.45 is sunset), meaning that we will get to try out photography during the blue hour and night. And there's a theme- let's try to take photos with a theme of 'red'. (Thanks to Sina for the suggestion!)
The idea is that each photographer takes images which fit the theme of 'red' - but how, and what it means, is of course up to you. We can share ideas, too, of course.