MegaSack DRAW - This year's winner is user - rgwb
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12v powerbank to charge devices over 3-4 days, but usable to run led lights in a tent for the same duration.
Not sure about the lights as it would depend on their input voltages etc but I've always been impressed with this:
https://www.powertraveller.com/en/shop/portable-chargers/outdoor-adventure/powermonkey-extreme-12v/
I've been using a [url= http://www.brunton.com/pages/power ]Brunton[/url] Metal and it's been very good, but not cheap and may not have enough capacity for what you're after. They do bigger versions too, but they're heinously expensive.
Also had good experiences with [url= http://www.goalzero.eu ]Goal Zero[/url] kit, but again, it's relatively expensive, though it depends on how much capacity you actually need.
In the UK, I've found solar chargers a bit hit and miss - mostly miss tbh.
The budget solution is probably some sort of rechargeable power supply off eBay, but no idea which.
work out how much power you need/ will use
Get a power pack at least x 2 bigger than that
Plus one forbpowermonkey small easy to use. Bags power for recharging devices