While I was having a kip last night (at home and solo) I remembered another term used in Australia for one's sleeping place.

Donga, (pronounced dong-'ga rather than donger in the context where I learned it but recently I've heard much younger people pronounce it the latter way.

I first came across the word when I went to Mawson in 1969. I've been able to trace its etymology only as far as the Middle East and North Africa where it meant 'wadi', so I presume it was picked up there by Australian troops who would shelter in such places if possible, rather than in more exposed locations. I don't know whether the Australian sense of the term is used elsewhere and I've never heard any rhyming slang (Ancient or Modern) applied to it either.

Cheers, Rowan