IMO doesn't really matter anymore, considering most of us have a phone with a front facing camera with much better quality than most/all laptop cameras, it can easily substitute a laptops camera.
Is there some easy to use software to use your phone as a webcam for your laptop (android -> linux/windows/mac) ? And do you use a stand for the smartphone for that?
Otherwise you need to connect to each conference with multiple devices, choose which microphone to use, share a presentation on one device, but the camera on the phone, ... . Doable, but annoying.
Otherwise you need to connect to each conference with multiple devices, choose which microphone to use, share a presentation on one device, but the camera on the phone, ... . Doable, but annoying.