The tubing on the side of the adult Martian helmets is a natural gas line, similar to the type used to hook up a water heater or furnace.
This film includes the first film appearance of Mrs. Claus.
The Martian ray guns are actually painted Whammo Air Blasters.
The entire film was shot in 4 days at Michael Myerberg Studios, a converted aircraft hangar at Roosevelt Field in Long Island, New York. It's now a shopping mall.