Video: You can easily modify just about any camera to get a lightweight night vision effect, but it's not useful for much more than playing around with a crazy view. Over on NODE, they make the same idea a bit more useful by also adding an infrared LED.
Essentially, this is a cheap action camera with the IR filter removed and a high-powered infrared LED added on. There's also a lens attachment added on to give the viewfinder a bigger screen. The end result is a super cheap camera that can see surprisingly well in the dark. Head over to NODE for the full guide.