What uses or senarios are there where one could use a white cone diffuser on a flashlight?
To light up a room or a tent. I’ve used one on a EA41 when up in my loft to move some stuff around. The EA41 and diffuser was more useful than a TK75 tailstanding
for visibility or safety/traffic…
For light painting photography, lighting up a room during a blackout, or as a camping light.
Great for traffic visibility when walking the dog. I started 3d printing them with translucent white filament - cost around $.5-1 each.
Just made one for a Warsun:
That is really neat!
Yo can use it as a illuminated dildo 
Aliens are attracted to it.
Hilarious!
tent lighting
camp lighting
anywhere you need to be surrounded by light.
Its basically an easy way to turn any flashlight into a lantern.
Hang a flashlight with a white diffuser cone from the roof of your dome tent and you’ve got a lantern without needing to pack in a dedicated unit.
Especially when you have a buzzing bulb in it…
Or put it in a leaking dike (we are quite famous for that)…
So what you are saying is, it would be perfect for exploring an old cave.
How rude!
I use mine for lighting small areas or for traffic visibility
very cool. are you able to make them in different colors? say, a light tan/cream? so that it will have a warmer tint than bright white.
Just about any color you want. I don’t know if tan is available as a translucent filament so you might lose some of the lumens but it would definitely work.
My current bedside lamp is a Niteye EYE12 with a diffuser hanging from the bunk above me. Magnetic ring with many output levels, long runtime on AA, best lamp ever.