When I retired I set up “Detective Walks' as a potentially remunerative activity to supplement my pitifully inadequate pension.
The Walks take people to places mentioned in the Sherlock Holmes stories of Sir Arthur Conan Doyle and locations that were important in Doyle's life. Because the locations are all in Central London, some in the City, I find that it's better to lead them at weekends, especially Sundays in the City, because it's quieter (so the customers can hear me) and because the participants are less likely to be run over.
So it suits me to be paid to work Sundays from time to time - and my charges are the same irrespective of the day of the week.
And the small income from the walks helps pay for my hobbies, including Turning
MC