The Concept Flash is not about an emotion (that would be expressionism, aka Kafka), but rather something larger, an idea.
The idea is then set, into concrete.
The logic of the idea follows the dialectic of the concept. This can assist you, in a structural sense, or even with the setting, characterization, narrative, etc. The attributes of the concept can be appropriated for technique within the flash. The concept flash is infinite in its manner. You could write a lifetime of these: ideas in our lives represented as things. Stop digging holes with your fingers. I am offering a type of shovel. OK, a spoon.
Will you shut up and provide an example?
Yes, I will provide an example.
Cube by Amelia Gray.