Thanks for all your hard work, Ngaire.
I wish I could come say "hello" to you in Zurich, but, unfortunately,I'll be back in the US.
If you are looking for some things to do to while away the 12 hours, you can store your luggage in Zurich airport and take a train (15 minutes) to Zurich main station and walk around. It is a lovely city. If you need restaurant recommendations, let me know.