Wev'e got some of these catalytic heaters: http://www.ukcampsite.co.uk/articles/view.asp?id=114
They are good for base camps, pretty light, not bad heating and good to stare at.
They were run in (takes some time to burn off the smell) but never used for the idea we had (We dropped a couple in caches for emergency heating but have a few spare)
Say $70ea delivered (au)?