This has the advantage that the "tech" of the camera is not visible anymore.If you like the camera recording led to be visible, don't cover it.
You can also turn off the camera red LED by adding this line to /boot/config.txt: A very good (and free open-source) motion detection/surveillance software with many configuration options is motion.
What you will get: Have you ever heard of Raspberry Pi?
It's a low-cost micro-computer that is able to run Linux and has endless extension possibilities.
It cost only about US and opens up endless possibilities of what you can build with it.
The official website can be found at At first, you should install the OS and software to the Raspberry Pi before mounting it all together.