I had the same thing a few years ago

I got into his car ( without any damage ) poped the bonnet and took the plug leads and a few other parts of the car from his works car park so he couldnt get home

He had 3 mates who went to and from work with him I waited until his finish time and sat and watched him wanging it over and pissed myself
As i sat with the plug leads hanging out my van window as i drove passed blowing my horn

My mobile phone rang about 2 seconds later with a very polite man asking me to please put the parts back on his car and him and his mates would club together and pay me there and then

I went back and collected my £80 and threw the plug leads on the floor and told him never to come near me again

childish i know ,,but very very satisfying