The design changes are:

• back to the old red LED
• use only the 1.8V output from the AEM10941
• back to the old blinking circuit that uses the STATUS2 pin from the AEM10941, with 80ms blinks at 5 seconds interval
• move the LED to the other side of the PCB, where the solar panel is
• get rid of the USB connector
• use a very thin PCB, so it is not heavy and it is wearable
• experiment with 2 LEDs in parallel, it could improve perception of brightness
• reduce PCB hole for the 1F 2.7V Nichicon supercapacitor

This is the schematic

And the assembled PCB looks like this. 

And when it is worn as a necklace is looks like this

I also casted the PCB in two component epoxy resin

And it turned out like this

I made my mother wear it as a ear ring

I also casted it into a silicone mold 

And then it blinks like this

What I've learned from Revision 6

• I love the LED on other side of the PCB, where the solar panel is
• I love the thin PCB, it makes it light, my mother can wear it as a earring
• It can be worn as a necklace
• it can be a desktop gadget
• two LEDs in parallel doesn't make it so much brighter but it is better visible