what the hell is that little metal thing called. I've tried anything from pipe screen to mesh bowl and I can't find anything anywhere? also not sure where to post this, if I'm in the wrong place would you kindly redirect me?
Get fancy with your search keywords. There will be tons of supply warehouses that offer these types of things.
"faucet screen" or "faucet aerator" should return the results you are looking for. Should be able to get one at a hardware store too.