For reasons which baffle my imagination, there’s a horizontal crossmember about four feet from the ground all the way around my bedroom. This made it hard to run wire down to an outlet from the attic, as Romex is not known for its wood-piercing ability. I had to cut a hole in the lath & plaster, stick a drill inside the wall, bore a vertical hole, and feed the wire. Of course lath & plaster is substantially more difficult to patch than drywall! In this picture I’ve screwed a vertical support in behind the patch pieces, then screwed the little bits of lath to it. I’ll smear a thick coating of plaster over the whole mess, then texture to match the surrounding wall.