I put up our christmas decorations yesterday. We decided last year not to have a christmas tree because of the inquisitive nature of a small boy, now we have two small boys we will probably be tree-less for a couple more years! Instead we put wires up on our ceiling, threaded branches through the wires and hung our lights and decorations off the branches.
Unfortunately I can't claim credit for the idea, JH has seen it in a pub somewhere years ago (I suppose it stopped anyone crashing into the tree at closing time!) I took a bit of convincing that it would look ok, but I have to say it looks totally amazing and grotto like, in a good way!