How do you reasonably punish a 17 year old?

My son had a party last night at my house. I saw this morning that, someone had tagged all my bins in silver spraypaint, and I can tell that my car has been driven somewhere. I am furious as the bins are council property, and he has already been in trouble for ‘graffiti implements’. I had the car keys in a basket in the kitchen, this is even worse because he’s an L plater. I don’t want to be horrid to him but I am really upset. Any ideas?