Residuals from albums is not something you live off of. A performer lucky enough to be in an original cast that gets to record an album will get maybe 1 or 2 residual royalty checks per year, and those checks are diluted down if it’s a big cast. An average annual income from this is likely $1,000.
Residuals from TV shows…well, first you have to have gotten a TV gig. Then you have to be lucky that your show is on a type of contract that gets residuals. Let’s just say…you don’t live off of this either.
You also don’t live off of workshops.
In all three examples, the income is not regular and it is not enough.
I know of many performers who do voiceover work. They invest in recording equipment for their home (a tax write off, mind you) and do lots of odd jobs that way.
Yes, fitness and personal training.
Teaching.
Modeling.
I know of some who work for things like TaskRabbit and Wag and Uber.
Many regularly booked Broadway performers wisely save their money and know that in-between shows, they will dip into that while collecting unemployment.
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle