Yes https://www.eetimes.com/document.asp?doc_id=1333219 is very nice but it is not going to help increase registration much for https://wiki.debconf.org/wiki/DebConf18/DayTrip/A which closes May 31. But not to worry, there will be plenty of other pleasant https://wiki.debconf.org/wiki/DebConf18/DayTrip choices after that.