ok guys, aint been online in a few days but just read all the ideas, The feather thing, I also have just tried, it does work, but the feather I used was way too small so I will have to find some bigger ones! That website link seems pretty cool, ill check that out soon, as for the trunk, I already have that down, its pretty simple actually...
1: get an old twig from the garden, and build up the width with tissue and watered down pva glue.
2: once you have the basic thickness, you need to wrap thin string around the tree in a spiral first from the bottom to the top and then back down.
3: give it another layer of pva and tissue, and allow to dry out.
4: give the whole thing a coat of dark brown, then desert yellow, then a gray brown colour.
5: Add some bits of chopped up rope to the top and then stick your coconuts at the base of the rope bits
5: to make the coconuts, just use some corriander seeds and paint them green
hope that makes sence
Cheers for all your input guys, im gonna go do some garden hopping now, I see the garden a few doors down has some of that fern that was mentioned ;P I'll let you know what comes up best but at the mo, the feathers have it