You’re not just limited to what can be seen through your webcam. Through tools like Zoom, you can easily share your computer screen to participants. You can share individual windows, as well as your entire screen. Here as well is the option to share your phone screen too! And that works either through a cable, or wirelessly through airplay.
The other thing to note here, is in the advanced settings, you can add a second camera angle. Just here, I’ve got another camera connected to my computer. The process for setting up the camera will vary with different makes and models. Here, I’ve got a basic Canon DSLR, which with a little bit of software, works simply by connecting the USB cable. Here, I’ve got the camera positioned on my desk, great for demonstrating with physical objects.