It looks really horrible uncovered ha ha. It's just a white plastic thing. The tree is pot grown so it's already in pot with soil and the odd root sticking out, so the outer sheep feed bucket is to keep things clean around the muddy pot and makes it easier to top up with water as well. Probably have far too many baubles and tinsel on it! There was enough for a bigger tree that we used to have at one time.
I probably said this last year, but the tree ornaments all remind me of things each year - where we got them, what we were doing. Most are cheap but one is a lovely china bell a friend gave me the Christmas after my Dad died. It was a really kind thought and is special when I see it.