A lovely person gave me a Goal Zero Lighthouse Micro Lantern.
No batteries, it is USB chargeable, which takes up to 3.5 hours from mains, PC or solar charger. It is a very bright 150 lumens which can be full on or half on, with both dimmable, and it has a hanging loop.
One gripe: the tech specs state the product is 68g and mine weighs 78 g. That is only half an ounce more in old money, but it is an additional 14.7% if my maths is correct. I'm thinking of having a dig at the American manufacturer about it.