Did this inspired by a thread at BackpackingLight by Scott Ashdown.He made one using two plastic caps that he also uses to drink from, my version is mono use but I think it is a bit safer and is still about 30 g or 55g with a 9 hour candle installed.
Not that bright, it is brighter with two clear "bottles" ( I made a prototype with that and then found a slightly smaller inner for the second version) but just enough for some ambient light and to reduce the humidity levels a bit.Anyway, it is almost free and very easy to make.BTW, it is important that the hanging 'rope" is from hanging wire, not cord and to keep the distance between the flame and the fly to about 20cm or so .Here is a video of it :
http://www.youtube.com/user/francodarioli?feature=mhumFranco
