My place is on solar. I am a huge fan of it. I upgraded my charge controller late last fall, and that really gave me visibility to what my system can do. I never realized how much power I was getting out of my panels, especially early/late in the day, and when it's cloudy. I always assumed I wasn't getting much at all during those times, but now that I have live readouts to my phone on battery voltage and power accumulation, I've canned plans to replace the few batteries that went bad finally last year, and go with a 400 amp bank instead of a 700 amp bank.
It's as simple as: panel >> charge controller >> battery >> fuse block >> wiring to your outlets. For what you're talking, you could do one panel, one battery, and a small charge controller.
$300 - 100 amp sealed AGM deep cycle battery
$200 - 100 watt panel
$100 - charge controller (10 amp)
$100 - fuse block, fuses, wiring, outlets
$700
There's lots a person would love to have when at camp, and if you're there for an extended stay, you'll want to have ability to charge while you're there, and tend while you're away. You need to know how much power what you intend to use will consume.
12v LED light bulb: .75 amps/hr
12v ceiling fan: .75 amps/hr
12v window fan: .5 amps/hr
12v squirrel cage fan: 5 amps/hr
12v porch lights: .25 amps/hr (I have outdoor lights on all 4 sides of my cabin)
cell phone: 5 amps/day
pc charge: 5 amps/day
tool batteries: 4 amps/day
small tv: 3 amps/hr
The marine, RV, and trucking world have an immense amount of 12 volt devices. My buddy custom built lighter plug outlets for my place. Most on Amazon only handle up to 2amps. We found marine lighter outlets that were rated to 15amps. I can run Makita battery chargers, pc chargers, mower/wheeler battery chargers, and even an electric fillet knife. When it's hot in the summer, I'll run my squirrel cage fan on the floor and blow cool air from the garage into the cabin. Open the cabin on the other three sides to force that heat out. About 30 minutes of that and it's good.
12v LED lighting takes almost no energy, so I went bananas putting lights into my place. It's as well lit as the finest operating room.