2005 Air vents

My wife has a 2005 Stratus, and every one of the a/c vents have developed horizontal cracks, which causes them to come out of their holes very easy -- TOO easy, as they sometimes fall out during sharp turns or sudden stops.

Anyone know of a source for these, other than a dealership? I've searched the internet and not had much luck.

Thanks.

Maybe a junkyard. Their might be a vehicle in a recent accident where they might sell you some for cheap.