A flight attendant dumped an entire screwdriver on my 2 day old macbook pro at the start of an 8 hour flight. Entirely accidental, but a pretty rare mistake for BA cabin crew to make. We got towels on it immediately and aside from a few sticky keys around the top left it worked pretty well for the flight and continues to be fine 4 years later. I took it as a sign that I shouldn't be drinking vodka at 7am and ordered a cup of tea to replace it.