Tips?, how times have changed! I well remember when I first started flying in the late 1960's at Heathrow for BEA; a senior steward I regularly flew with use to load a couple of the silver sugar bowls we used with small silver and place one in each toilet on the Trident. He never failed to go home loaded with loot, although I remember his anger once when a passenger nicked the lot, including the sugar bowl! Different days when flying was a joy!
Must stop tapping now, Matron's coming round with my hot milk!