I need an object to light itself equally on all sides when lit from one side. If an object is lit on one side, it should be just as lit on the other side. I understand I could increase ambient light or emission, but the object shouldn’t always be lit, just when light is on it.
Basically it should look like the cube on the right and not the one on the left (I increased emission for this image, but that won’t work in practice)
In your case (point light and cubes), increase the emission property on the cube’s material when the cube is within the light’s range. You can either do this in script with box/sphere intersection tests or perhaps use an invisible collider Unity - Scripting API: SphereCollider and Unity - Scripting API: BoxCollider