Well a novice violinist from the beginners' orchestra came over this afternoon and evening. She's an experienced musician, but in the world of folk music on ukelele and guitar, so a violin is a very strange beast, as is reading the dots. She is having lessons, but can't afford very many at the moment.
Just helping to get some basics right - getting her to play full length bows, get the bow parallel to the bridge, getting left hand tuning right. We played through some of the orchestra music, fixed a few bowing things and she was playing so much better - and she's going to book some more lessons as she felt more comfortable with the instrument (I don't think anyone had explained the mechanics of bowing to her).
For fun, I played along with her part on the tenor viol (tuned up to A440) which conveniently has a G, D, and A string, although not necessarily at the right octave

. Used the cello as well.
It was quite good fun overall and she really seemed to enjoy it, and got something out of it too.