Veronika Kukresh, also known as Enot Art, made a Rey costume from Star Wars: The Force Awakens. It’s a popular costume choice these days. If you’ve waited until now to craft your Rey look, you can benefit from a plethora of how-tos and tutorials shared by cosplayers like Veronika. She put together instructions on making Rey’s goggles. In the story, Rey made her eye wear by pulling together scraps, including a piece from a stormtrooper helmet. Veronika used more accessible materials including EVA foam, plastic sunglasses, and Worbla.
She says the following about the small light on the goggles:
The flashlight is also made of worbla. The base of the flashlight is a top cap of a lipstick. There is a LED inside. And the switch is on the reverse side . Wires are hidden under the worbla, the battery is located on the back side of the glasses in a deepening carved in EVA. For reliability, I not only glued the fastenings and the flashlight, but also sewed it using an awl and durable thread.