That sucks Joe. I feel your pain. You can't have anything without someone trying to take it away. The cops don't care, so its no use to report. Parents don't believe that little Johnny did such a thing.
Hard boil some eggs and remove the shells. Soak them in vinegar for about a week, then egg their cars. Paint comes off. They won't egg your car, or anyone else's anymore because this will be in their memory. Just make sure that you were not the only one egged, or they'll know who it is.
My buddy's neighbor and some friends shot a bottle rocket into his vette and it left a burn on the paint. Next day, no one involved with the bottle rockets had any tires.
Sounds harsh, but some things across the line. In high school, I knew that eggers were on the prowl for a couple of weekends. I also knew when they were coming to our neighborhood. I parked the good cars away from the street and waited in the weeds with a basket of railroad ballast rocks (about egg size). When the first egg flew, the rocks flew. Egging stopped. Another solution is to set a trap for them, but do it away from your house. Find out if they will be egging and wait in the bushes with a paintball gun. When their windows come down, open up without remorse.
One time a professor (not one of mine) at college opened his door into mine and left a scratch / dent about the size of an egg. I was a measured 3 feet from him, so there was no excuse. I went to his office and asked him to come look at what he had done. He acted like I was crazy and a little dent was nothing. I called the cops and then he tried to deny that it was he who did it. The cop took a loose piece of paint from his door that was from my car for evidence and he had to pay for my door to be fixed. It was just like $250, but I would have paid for his car that I damaged. Actually, I have paid for someone's car that I damaged.
There was a group of punks who kept smashing mailboxes in the country. A farmer got tired of replacing / mending his box (and calling apathetic parents), so he covered the box with 1/4 steel plate. A punk went to the hospital over that one when he tried to smash it with an aluminum baseball bat whilke driving at 30 mph.