I’m currently adding a short scene that I believe will solve my dilemma: Obi-Wan returns to Mustafar and finds Anakin’s saber on the shore of the lava river.
This is part of an approximately 2-minute montage of different scenes with a few sound effects, accompanied by this:
https://bit.ly/2wErDbF
The montage will include shots from Ewan McGregor’s Last Days in the Desert, and the final shot will be Tatooine’s setting suns.