although i posted this thread about ukes as the instrument I am also involved with a wind band theoretically going to Germany in the summer. Howard has been a great help but has certainly without intention confused me more, some wind instruments having abalone inlay on the keys.   
Hopefully we will get some clarity soon, i hope people realise traveling with instruments in the EU could be fraught problems.

A little story to show what can happen. We went to Singapore and as we came of the plane we had to put our hand luggage through a scanner. the officer at the other end saw me pick up the rucksack up and pounced on me and told me to move to a separate table where he and another officer asked me had i packed the bag myself, was I carrying anything on a list i was shown, etc all answered with a no we where then told, you can if committing an offence go to jail etc I will ask you again , again i answered no . So the undid the rucksack and after putting rubber gloves on much to my horror and amusement as i do not know what is in the bag they are after. He puts his hand in and a smile appeared on his face as he pulled out a game we had for waiting at airports called Bannanagram to much hilarity on all sides the game is in a Banana shaped bag .
Keith