Doing conduit channels is something I've got in mind, but I'm not confident about doing it myself. How do you go about cutting out the channel, securing in the trunking and plastering over?Flat cabling under the carpet, in the walls for everything else.
Running cables in the walls is a messy pain in the arse, but once it's done and you can't see a thing then it pays off. If you want to do it properly, you can put some sort of conduit in the wall so you can feed extra ones through.