Jobs that find more interesting jobs

Journalist. Bonus: you'll soon find yourself in need of a new career.

I would imagine being a consultant developing software could get you this sort of exposure. One of the things I like about being a software engineer is that software often does something for people who are something other than other software engineers. I've had to dip my toes into small business accounting, sales tax codes, and all kinds of weird advertising niches as a software engineer. Working for big companies, my exposure to our end users is pretty minimal, but if I were, say, a one-woman consultancy that developed smartphone apps for clients, I bet I'd run across all kinds of interesting people who had an idea for a specialized app but none of the technical knowhow. Perhaps also bookkeeping, and it's easier to learn to keep books than it is to learn to write code.

Personal assistant

Its less about the job and more about connections. Watson doesn't do what it takes for the job she is in. She is passive. The one thing she does do though is she works through some sort of agency. She is blessed by the connections she has. If you want the same thing in life - it is a question of 'The Talented Mr. Ripley'. You have to make and work your connections. You have to prove yourself invaluable and desirable. You have to sell yourself without obviously selling yourself. To have those connections - its a question of learning. What motivates those around me that I am interested in, and what do I have to offer that expands their vision and/or eases their burden? Who does this person know that I need to or want to know? Do that for everybody. An experience with a dishwasher may be just as useful as an experience through your local British sounding ex-patriot.

Oh, thought of another one - my friend worked as a location scout and ended up developing relationships with tons of people with really fancy houses in Los Angeles, many of whom had got their fancy houses doing interesting work. I'm sure you could get the same exposure doing lots of other things that tend to attract wealthy folks - skippering yachts, walking dogs in nice neighborhoods, private tutoring, etc.

Police officer, FBI special agent, private detective, or other law enforcement. Anthropologist or other social scientist who does naturalistic research. Journalist.

Political campaigns. You'll meet lots of different people from very different backgrounds.

Spouse of a politician.

Note: Joan Watson was not originally a live-in sober companion. She had her own place until Sherlock's dad fired her. Then Sherlock had her move in.