A camera module consist of a lens, a battery, a USB cable, and a remote controller (If wifi, then no remote controller).To make a hidden camera by yourself, you just need one camera module and any subject that can hide a camera module. More on
How to make a hidden camera by yourself: https://www.youtube.com/watch?v=RUUXYr-pgDo
New products in this category are coming soon!
More Info About Camera Modules