I have an LED headlamp, quite good. I'm after a small lamp that can hang from the peak of the inside of the tent. Some time ago I saw on that was powered by one or two flat batteries, the sort that desktop computer have. Some of these may suffice:
https://www.paddypallin.com.au/luc-lux- ... light.html
https://www.paddypallin.com.au/luc-outd ... light.html
https://www.snowys.com.au/hiking-lanterns
It seems that charging while walking may be tricky, especially in scrub. I have seen solar panels attached to packs, but not lanterns. One possible problem with solar power is that there needs to be enough daylight when not walking - usually at camp - to charge the battery. Night walking limits charging options.