That is a difficult one. Maybe you can boost the volume when he sleeps? In that case he sees/feels what you’re experiencing. Just make sure your other neighbour doesn’t hear it.
Another thing you can do is create a device with a timer that hits the wall every now and then. I saw someone made it for his neighbour and it hit the wall about every 30 minutes so his neighbours couldn’t sleep…
The best way to get a (petty) revenge is by fucking with someones sleeping pattern. If done correctly you will bother him for the whole day!