I soldered together my Ramsy Electronics LEDS1 LED strobe light kit today. The plan is to make the “eye” motif brooches (on the cloak’s shoulders) flash blue light.
The LEDS1 kit comes with a 9 LED board, but I also bought a 20 LED add-on board. By cutting this 20 LED add-on board in half, I got two equally sized boards for the “eyes”. The final product is a bit underpowered (it does not over-drive the LEDs, and allows you to turn the “flashing” duty cycle up to 100%), but hopefully behind some frosted/etched plastic it will give a good effect.