I do live coding with my clients when is kind of a "brainstorming" meeting. We throw ideas around, and I code fast and ugly to have something running on screen, usually maximum 2 minutes per idea, otherwise the client gets bored. After like 10 ideas, both of us agree on one main idea that gets implemented into production.

During this time I screen-share my entire screen, so we can draw fast on Paint, switch to code see how it behaves when implemented, mainly GUI elements only.

I usually use OBS during this kind of meetings to record everything, in order to have later review material in case I forget something. Also a nice side effect is that later on, if client is not happy with something I have hard proof that he did said/agreed on something.