A mathematical genius might ignore the discovery he could fly. But another might take up painting or window washing, or substitute for the entire news helicopter. A lot would be useful in the special effects area. Searching dangerous locations would be ideally done by astral projection or intangible characters. Heat powers would be useful for a glassblower. Plant growing for a florist. Invulnerability for a stunt double.
Mind you, some are local color, either bit characters in the background, or a little detail that probably doesn't drive the plot, but there's a lot of jobs that superpowers would be real useful for. A much neglected area.