Since in Berlin is trend with this co-working spaces … the bank can offer to the public some co-working space. (outside the working hours). Get close to communities ...
- create a cozy, pleasant and creative atmosphere
- give away some flipboards and office stationery
- put a wireless printer loaded with paper secured behind a wall
- give away free wireless internet and free electricity access for laptops
- if is not to much you can add also a video projector
You can start just as an experiment.