Mostly genuine. Usual disclaimers (legal, moral, safety...) apply.
covert human intelligence source (computer hacker – see the Leveson Inquiry)
antique shopping tour guide
art selector for interiors
bassoon player (or whatever there’s a shortage of)
dreamer-up of names for bands (and paint colours)
forger of modern art
freelance pavement cleaner
Mandarin-speaking salesperson at Harrods or Selfridges
manufacturer of fake Ugg boots, GHD hair straighteners etc
oven deep cleaner
paint fantasy land/cityscapes for computer games
player of musical glasses (glass harmonica)
priest, vicar (there’s a shortage)
rent out your garden
run alligator-hugging business
sell private jets
student lookalike: go to parties, get drunk and have one-night stands while your employer studies the subject and gets a first
Social Media Expert (advise businesses, implement socmed strategy)
stunt writer: Mark Twain employed ”a sort of stunt-writer to prospect for diamonds in South Africa and gather material that Twain could use”. Hilary Mantel, Guardian March 2010
temporary house-sitter to take in packages, wait for gas man etc.
totem pole carver
More here and here. And here. And here.