I will drill new round holes (about 5 cm in diameter) in the drywall as speaker cables, scart cables, etc. need to be rerouted. This will leave some old holes that need to be repaired. What to do? You can't just fill large holes that go straight through the drywall, can you?
Does anyone have any tips on if there's something that can be put in the new holes so the cables don't have to "rest against the drywall," some kind of box..?