I belong to the Hannohirrim, the German Tolkien Society smial in Hannover. We meet once a month; though distance prevents me from attending regularly, I enjoy going. Currently we're reading the Hobbit together as well as discussing various things (mostly) Tolkien-related.
We also meet at the beginning of January every year to toast the Professor on his birthday, and every couple of years we hold a "Tolkien day" to which the general public is invited.
Those who can read German are welcome to check out the group's
homepage - there are also photos of various activities.
There are, of course, numerous other smials in other areas of Germany, so anyone interested can read the "
Deutsche Tolkien Gesellschaft"'s page for more information. The smials are called "Stammtische" in German.