I believe enough people here know of creative ways to bring this guy down .

Lets say he ordered illegal drugs to his name and address and postal inspector was aware of actions .

They sell disposable cell phones , or phones with addable minutes . Use his name when recharge phone with address for required information . Then do Bad .

They have credit cards you prepay . Set up funds over phone in his name and address and then do bad. Order illegal weapons , foreign counter band or child porn in a trail that leads to him .

These are poor ideas from someone not to smart ( me ) . So I believe others have better ideas that will give you the satisfaction of doing justice .

Take a license plate from someones car , remove expiration date sticker and put on his car . Cops will do the rest .

You need to remove your feelings and think of things with bad consequences .

Vengeance is a reaction and not a emotion .

Good luck , If this isn't a smart post then maybe it will be momentarily entertaining