Dougie turns into a gold ball...
Maybe someone will be interested in my thoughts on this:
-Dougie has been 'manufactured'
-Once his purpose is fulfilled he is destroyed and leaves behind a small gold ball
-The red room has statues of Venus and, when Mike puts the ball on the table there is a slow zoom up over a golden seashell which is the base of the table.
-Venus is famously birthed from a seashell in mythology
-It's my guess that the ball is perhaps a golden pearl. This is what would exist in a shell if there wasn't a person occupying it, now that Dougie is gone, the pearl is revealed.
That's as far as I got. If you agree and think maybe it's symbolic of something let me know!! If you think I'm a crackpot let me know that too!
I'd say that the "pearls" are very different, but there does some to be a connection between manufactured humans, in that their "essence" is presented in the form of a golden orb. So evil has its own form of pearl and so does good.
I think this is a signal of Lynch's/Frost's idea of the "soul" perhaps, as the soul which leaves a certain car accident victim is a similar hue, but the soul is in a natural state, it is free-form, whereas Laura and Dougie's "souls" are visually manufactured objects.
That Dougie scene reminds me of another Lynch short work, called Dream #7
It also made me think at the black box in Buenos Aires which turns into a Silver sphere, or a small piece of silver, that was what it looked like. Oh, so many mysteries!