I like my Olight S2R rechargeable light for outdoor use. While camping, having some "lantern-like" light in your tent can be helpful. I Remixed the excellent "Olight S1R Ultralight Diffuser" by @imbrianj to be sized for my light's slightly larger diameter. It weighs in right at 4 grams. It's a tight fit, so you may want to scale it up a hair if you have issues. I printed mine in White PETG.
2023/11/20: Added low-profile diffuser for easier stowing for travel.
You could also print these in different colors for different uses! A red diffuser would be beneficial for night time use to keep from disrupting your eye's natural night vision - and due to the wavelength of Red on the visible light spectrum, the human eye can see similar levels of light as analog night vision.
The author marked this model as their own original creation. Imported from Thingiverse.