I like the last one but seriously move the bin or put a small padlock on it. You’re not going to win with your neighbour, if they’re filling your bin they must know it’ll be causing you problems. If they’re that selfish they’r elikely to escalate it if you get confrontational.
Just a thought, where is your bin? On your property or in a public place?
Dummy CCTV cameras start at around £7 or use a GoPro on time lapse if you have one.