Alternatively, they could just charge to 80% and show that it is 80% charged, like iOS and macOS do.

edit: I seemed to have misread the comment above. It’s useful to not be lied too, in my opinion, because then you still have the option to charge to 100% when needed.

One of those cheap 12-15$ AliExpress DVD R/RW USB C drives did the trick for me.

Framework laptops solve this by having physical switches for the camera and microphone at the top of edge of the screen. Can’t get safer than that except for physical removal.

If you just want CAD without CAM then the free variant of OnShape is amazing.