I wonder given enough cheap salt, is there a possibility of it being useful for something? Like at least a cheap building material for desalination plants in ar

I wonder given enough cheap salt, is there a possibility of it being useful for something? Like at least a cheap building material for desalination plants in areas where the deserts meet the coast, and the lack of rain would make it last longer or something. Or (this might seem crazy) considering Antarctic sea ice is melting at increasingly faster rates, which isn't good in itself - is that causing the water at the far south latitudes to be lacking in salinity? Would additional salt there provide for keeping the ecosystems stable for longer at least? Granted shipping would be another issue. The former may require some free market ingenuity, the latter may require some ingenuity and some sort of goodwill on the part of some governments.