In keeping with metiers that still exist in Paris, here is an authentic organ grinder I found just outside the Jardin du Luxembourg.
The other old fashioned careers that are still alive and well–OK, that are alive anyway–in Paris are the friendly neighborhood Knife Sharpener and the friendly neighborhood Chimney Sweeps.
Please feel free to check out my Paris Inspired fiction here

where is the monkey?
On my back!
You crack me up, babe.
See you in the streets,
Paris Paul