Thanks Lars for the complete summary of yesterday ! Nice to see good vibes and motivation for the OSCE days 2016 
We also mention to organise a zero waste event, and I think this a fantastic idea
I know that Ouishare has develop a tool ouikit, which is basically a guide for zero waste event and a complete toolkit to organise event (eco cups, cuttelery, reclycing bins, awareness billboard ect …). This toolkit is now shared with other Parisian projects that can use it whenever they need it for events, meetings…
How about implement something similar in Berlin for the OSCE days? There might existing projects in Berlin, and it could a good opportunity to work together on a shared zero waste event toolkit
It can also be a challenge itself.
What do you think?