The 14.8 gram 650 lumen glow in the dark Awesome Flashlight I wrote about recently which can be made into a head torch like this can also be converted into a cap light by using the supplied 1.9 clip. This A5X model is absolutely brilliant. You could just use the side LEDs (without the silicone diffuser I suggested as a useful addition) to make into an excellent tent lantern. I highly recommend this wonderful Nano A5X – A$57.99 (Dec 2021).
Four levels on front beam: 2, 20, 360 & 650 lumens ( 66 Hrs, 10 Hrs, 150 Min, 75 Min). Sidelights 17 lumens (12 hrs) & 65 (3 hrs).
See Also:
DIY 20 Gram Rechargeable Head Torch + Tent Lantern