Are you looking to sing in a choir or play in an orchestra, seeking like-minded individuals to share your hobby or simply hoping to meet some nice people with whom to spend your free time? Bonn has several hundred associations, ranging from an Eifel association to an allotment association to a Somali cultural association.
You can find out more about Bonn's associations here (information in German only).
If you are interested in doing voluntary work, an overview of the various opportunities can be found here.
For more information on the Volunteer Agency of the City of Bonn, please have a look at the flyer.