I would like to establish a regular space for physical computing activities (with children) in Bonn / Germany and am looking for like-minded people or established groups in this area. Some more thoughts on my blog.
Sounds like you're discribing a Hacker Space. Hacker Spaces are places where groups of people get together and work on various projects usually involving Art or Electronics.
There is one in Bonn, Germany: http://hackerspaces.org/wiki/Netzladen
They usually allow children too.
