Hope I can post links on here. Found a couple of things for you.
www.berlin-mitte.de/index_2965_de.html
Jugendkunstschule Mitte
Schönwalder Str. 19, 13347 Berlin
Schöningstr. 17, 13349 Berlin
Turmstr. 86, 10559 Berlin
Tel.: 2009 4 4173
Ansprechpartner: Herr Schnebel
Stülerstr. 2, 10787 Berlin (privat)
Tel.: 262 73 20 (privat)
Fax: 262 73 20 (privat)
eMail: [email protected]
Wöchentliche Kurse für Kinder und Jugendliche
von 4 bis 27 Jahren
Malen, Zeichnen, Basteln, Keramik, Holzwerkstatt, Drucktechniken, Fotografie, Buchbinderei, Tiffanytechnik, Metallplastik, Aktzeichnen, Öl- / Acrylfarbenmalerei, Kunstlabor (Mappenvorbereitung für das Kunststudium)
Ferien- und Wochenendkurse, vormittags Schulklassenprojekte
(you only pay for material, there is no fee for the course usually).
www.isff-berlin.de/musikschule/
The choirs are usúally free and you don't need to register, just find out when they take place and go along and try them. I think it's a nice way of practising German. My dd goes to a church choir at a German church. There's a choir I really like the sound of but it's too far for me at the moment - Franzoesische Str and costs about 20 Euros a month. They told me you can try it for a month first:
www.sadako-ensemble.de/index.html
Here are a couple of English language activities I found when I was hunting about on the internet, but I haven't tried any of them out yet:
www.jfkfriendshipcenter.org/5.php?lang=de
www.english-football-club.com/
www.bbpc.de/index.html