Many years ago, I was attempting to get a job at a certain venue. I was told there had to be a least two in the "band". I told them no problem.
I had a good friend who almost always came to see me wherever I played. I got out one of my guitars, and he sat on the stage with me, in front of a mic, strumming away, although he didn't know a C from a Q chord. He soon started interacting with the audience and announcing songs.
Of course the guitar wasn't plugged in. Everybody loved it. They would even come up and make requests from the "guitar player". Over time I taught him some chords and he actually learned to be a semi-decent guitar player, long after this job ended.