Those BushBuddy type stoves are not that difficult to make and can be done cheaply with a couple of cans.

The problem is , and I suppose this is what moondog is alluding too, that the standard tin can will rust pretty fast after a few uses and all you gain over the Hobo/Ikea versions is the pleasure of watcking those flames shoot inwards and maybe less smoke and ashes because of a more complete burn.
I like the idea of the foldable types like the Nimblewill Nomad (
http://zenstoves.net/Wood.htm)
There are a few commercial versions availiable, like the Vargo
Hexagonhttp://www.vargooutdoors.com and the Emberlit
http://www.emberlit.comBut try the Ikea. Add a windscreen about 2-3 cm wider than the burner. You could use that to wrap around the burner in storage/transport. It may not work for you...
Franco