I talked to Charlotte SH Jensen at the National Museum in Copenhagen yesterday.
We've been talking and doing stuff for several years, so we have a huge backlog of ideas that didn't work, but we're still able to find new things to do.
One idea that came up yesterday is rotating pictures on Wikipedia. We hope to get people to do something at the #hack4dk hackathon in early October.
See the idea at https://hackdash.org/projects/55e99d6174d6ac1d21451575, and more about #hack4dk at http://hack4.dk/
Regards, Ole Palnatoke Andersen, Wikimedia Danmark