Mozilla Hacking Day during MeshCon’14 at TU Berlin in October 2014. Mozillians mixing with Open Source FashionTechies.
Links:
#mozillahackingdayberlin
Flickr: https://www.flickr.com/search/?tags=mozillahackingdayberlin
Mozilla Hacking Day: https://reps.mozilla.org/e/mozilla-mozilla-hacking-day-2/