Got this a couple weeks ago, $8 on Prime:
GLAREE E03 Keychain Flashlight, CREE LED 150 Lumens Mini Torch AAA Battery EDC Pocket Penlight Portable Emergency Light
https://www.amazon.com/dp/B075ZTG46N..._EFgaBbER9QSGF
It is a minimal 1 AAA light. It has a moonlight mode as well as a 150 Lumen. It is made of aluminum and the activation is a simple twist.
I use it on my lanyard as a small carry light at work.
Just wanted to mention it in case folks are looking for something on the small size. I’m pretty happy with it for the price.