On December 1, 2010 we had a presentation by Alan Adler, whose company, Cases by Source, Inc., makes carrying and shipping cases for high-value equipment. His other company, Source Packaging, Inc., makes those overly-large merchandize packages that discourage retail theft and tax our skills when we have to install a new print cartridge. It was obvious that he was the go-to guy on plastic foam and fabrication, so I asked him what it would cost to mass produce the approximately one-meter-square foam panel building blocks of the large solar-heated evaporator rafts that might be able to increase the humidity of coastal air flowing over mountains. This might be a help in the world-wide problem of insufficient precipitation on mountains that has been causing severe drought. My proposed design was a closed-cell foam a few inches thick for floatation, suitably reinforced by a metal or plastic frame with attachment ears to connect to adjacent panels of the raft. The top layer would be a dark-colored open-cell foam that would hold a thin layer of sea water to be solar heated and evaporated. Wicks would feed seawater up from the ocean beneath the foam.