Here's a little project that I built this year, and before anyone asks, yes I do know that you can buy this dirt cheap from x,y and z.
The head and thumb screws are 3D printed, the base and arms are wood with stainless steel bolts holding it together. There's 24 white LEDs providing the light and the lens is from a cheap magnifying glass.
So that it does not topple over at full extension I cast some lead into a slot in the base. Power comes from an external 12v adapter.