What is the longest time/days you will be camping? How many charges do you expect of phones and camera batteries? 30000mAh portable chargers are cheap. 1-4 of them for under $100 may be enough to not rely on solar for 4-5 days. I recommend that approach. If you want extended charging for 2+ weeks, then I recommend a deep cycle battery for about $100 and a 12v solar charger to top off the portable USB chargers while not in use.
A & A parents of DD 2005, DS1 2007, DS2 2009 2011 Suburban 2500 6.0L 3.73 pulling 2011 Heartland North Trail 28BRS 2017 Subaru Outback 3.6R 2x 2023 Chevrolet Bolt EUV (Gray and Black Twins)
There are a lot of them out there. Some are battery pack/Solar chargers (I suggest that type) The one I have depending on the level of sunlight can hit 6-7 Volts possibly more.... One device I have seems to "object" to this much charge.
Another option is a small (like 12 AH) LiFePo4 and a charge controller with a 100 watt panel (I have that too) Rather expensive but when the lights went out in my apartment.. the big inverter/battery pack kept the fridge cold and the little inverter/battery kept the freezer frozen (I have a small "Danfoss class" chest freezer) was very nice being able to keep things... cold.
Or I could use my Solar panel to charge a battery pack and use it to charge the other device.. in fact I think I'll try that.
Home was where I park it. but alas the. 2005 Damon Intruder 377 Alas declared a total loss after a semi "nicked" it. Still have the radios Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times