Thanks for your answer. I invented this cover just for myself. It's still DIY and I want to move forward and produce it on professional machines. But I can't do it without people who will be ready to buy it.

Price on the landing page is very exemplary. Just to understand which will be optimal and calculate production costs.

Using of plastic shutter is a bad idea, because you can damage your laptop and you can't stick it on your mobile phone.

Using of Post-It is a bad idea, because you need to stick and unstick it every time, when you want to open/close your camera. This process leaves marks on your screen. Sticky note may suddenly fall off.

My cover in opposite very thin and has a mechanism to open/close without unsticking.