What is a suitable gift for an Italian PhD advisor based in the UK?
Instead of something related to Italy, how about something related to your own home?  I (in the US) had a student from China; she gave me a tapestry depicting the Great Wall.  I still have it hanging here many years later.


  Important note: you have finished the Ph.D.  Giving gifts before that may be seen as an attempt to bribe him.  It seems to be the custom in China and Korea to give gifts to the professor, but not in the US (probably also not in the UK).  Wait until after you are finished, so it won't be seen as an attempt to unfairly influence the professor.