Clarinet
When I played with a symphony orchestra, our union reached an agreement with a major airline about which instruments we could carry on board, and which had to be shipped as luggage. A cellist was dismayed to find that his delicate, expensive wood instrument was consigned to the rougher handling and cold temperatures of the baggage hold.
He neatly solved the problem. Cello in hand, he approached the flight attendant at the gate and asked, May I bring my clarinet on board? Scanning her list, she replied, Clarinets are okay. Have a good trip, and, smiling, waved him on.