DcoltTech's suggestion is great, but I think that it might be a little too thick for your liking.
I personally use Speck's Pixelskin HD on my iPad (third generation). I accidentally dropped my iPad from about three feet (in a parking lot, so it wasn't a fluffy carpet landing), and absolutely no damage was done.
So if you want a case that is good for the accidental drop, I absolutely suggest the Speck Pixelskin HD. The only downside is that the cutout for the lightning connector is really large (to be able to put a third generation iPad with 30-pin dock connector). I really don't think that's a large concern though.
Oh, and here's a link to their store:
You might want to search to see if they have them locally in Australia instead of paying an extra five dollars on shipping.
Jan 23 at 07:43