If you want to make some noise, get a Nathan AirChime 540. Its an adapted train horn set for cars. Same pitch/db as a train. Very illegal most places. Also costs about 1500$.
Google train horn kits for some ideas.
“Coming of age in a fascist police state will not be a barrel of fun for anybody, much less for people like me, who are not inclined to suffer Nazis gladly and feel only contempt for the cowardly flag-suckers who would gladly give up their outdated freedom to live for the mess of pottage they have been conned into believing will be freedom from fear.”