This object was made in Tinkercad. https://www.tinkercad.com/things/d0VcXQYV6zR

   This is a safety topper for mini-led flashlights.  It fits snugly on top of the common design of mini-flashlight from box stores. It glow a nice radius and helps stop little trick or treaters from accidentally blinding each-other and parents .  It works great to light up the candy bag to see what goodies they have gathered!

This was printed at .24 layer height and came out half-decent for a test print.

 There is a brain shaped internal cavity, you might beable to paint the inside with a different color.