It's worth to mention that Pursim Laptops have a hardware "kill switch" for microphone/webcam/Bluetooth/wifi

I bought an aftermarket webcam cover that slides open or closed. After a few days, I realized I was always checking to see that it was closed. I went back to using a piece of black electrical tape because that way I KNOW it's blocked without having to check. Besides which it's cheaper. Anything to lower the cognitive load.

I put electric or duct tape the laptop webcams and have done so ever since my first laptop with a webcam. Only way to be sure you aren't being recorded other than opening up the laptop and physically removing the webcam.

Some thinkpads have them.

My Thinkpad T480s definitely has one. Just needs a switch to also block the microphone

My Lenovo P1 has a fn button to disable the mic and a light showing if it's enabled or not. Not as good as a switch, but makes me confident some random application isn't listening at least.

To everyone doing confirmation bias replies: yes, I'm sure we can find lots of instances where a cover came with the laptop. My old EEE PC netbook also had one (and it kept falling open if I put it in my backpack on its left side). Adding them, however, either fell out of style or was never common to begin with, and the more interesting question to answer is why that is when clearly so many consumers care for it.

I saw a laptop recently (within the year, I think) that had the camera situated under one of the buttons IIRC, so that it was naturally covered when not in use

Huawei Matebook X (dubbed the 'chin cam')

Huawei has:

https://www.theverge.com/2018/2/25/17050098/huawei-matebook-...

I have seen several laptops with physical slide covers. Didn’t note the brand.