We have a 1910s house with high ceilings and picture rails. I’d like to have fairy light going round the room this Christmas, but how do I do that? The room is quite large and I don’t want to have cables falling down the walls to plus them into sockets, but I don’t really know where I’d put the battery packs if they were battery operated lights. And also how do you get the lights to stay in place?! We had the room re-plastered a year or so ago and I dont want to drill holes for the sake of a bit of atmosphere.