Do you want some more?
The legendary Kallboys, partly known in this forum with their Mondorfer Bastelbögen:
https://www.kallboys.de/mondorfer-bastelboegen
Conys Modellbau for all who are interested in railroad ferry boats:
Homepage
Architectural models from the southwest of germany:
wediul.de Modellbau - Kartonmodelle im freien Download von Dieter Welz, Ulm
And finally Volker Preikschats famous cars, known from his advent calendar:
racepaper.de - germany - bremen -- Predes (C)2000-2005
I presume there must be much more sites I don`t know...