I got a couple of PIR sensors which are wireless and give a doorbell ring when anyone crosses the beam. I’ve seen the look on people’s faces when they come towards the door and the doors bell’ rings for them. It puts them on the back foot. Same with PIR lights.
These people know the difference between real and dummy cctv. Although I’d hope either might again make them feel less easy.
Actual Cctv doesn’t seem to help very much with rural crimes: sorry but the classic ‘a white van and two guys wearing jeans and dark hoodies’ seems to leave the police pretty stuck with where to start. Same as number plates. The ones used for crime are registered to empty addresses.
Gravel, locks, dog, lights might help. Gates that are shut have been shown to reduce casual footfall of chancers in suburban households compared to households with opened gates.