Keyboard shortcuts are good ways of quickly doing something - as
compared to using the mouse to click around the screen. Most video
conferencing applications have built-in keyboard shortcuts to aid
activities such as mute/un-mute or toggling the video or raising the
hand and so on.
Most of these keyboard shortcuts, unfortunately, require the use of single or multiple keys (eg. CTRL + D or CTRL + ALT + C). These can not only be difficult to remember but also tough for children to use or use with one-hand.
The vckyb is programmable. You can easily reprogram it to suit your preferred layout. Change the default key sequences, build additional functionality layers. And more.
You could have a keypad in multiple sizes. With a variable number of switches. Different models enable varied features with different controllers, firmware architectures and so on.
A rotary encoder can be a very useful thing. Use it to control the output volume. Or the mic volume. Or map it to page-up/page-down keys. Or the mouse scroll wheel.
Integrate a foot switch! Build RGB light effects and animations. Integrate a small OLED display. Add a small buzzer.