The term 'Rainbow Maker' is a job description that refers to someone who creates rainbows. The two crossword solutions for this term are PRISM (5 letters) and MIST (4 letters). A PRISM is an object that refracts light, splitting it into its component colors and creating a rainbow. MIST is a type of aerosolized water droplets that can be used to create a rainbow when illuminated by sunlight. Therefore, the job of a Rainbow Maker involves using prisms and MIST to create rainbows.