On the day of departure for vacation, I found out that the lid of this headlamp had been lost. A replacement lid was quickly printed. I didn't bother to recreate the original semicircular shape. Since the black washer was also lost, I made the lid a little higher. It helped us through the vacations, but those who want to put more work into the aesthetics are welcome to do so.
The author marked this model as their own original creation.