In the past few years, we have covered many amazing Raspberry Pi projects here. This Portal 2 security camera is also worth a look. It is made with a Raspberry Pi High Quality Camera. You are also going to need a Pi 4 and red LED.
The 3D model for this security camera was completed in Fusion 360. 20 x 3D printed pieces and 2 laser cut acrylic disks were used for this. The above video shows how you can build your own Portal 2 security camera.