I have a storage container outside of town on undeveloped land.
I spent $130 (retails for $223) on a huge marine battery (for RVs) and $70 on a solar panel with a controller.
I run 8 60w equivalent LEDs, a boombox, a cellphone charger or two, and still have some juice left over.
The power inverter I use (12 VDC to 110 VAC) is small, only 140w continuous.
I can run all the lights for about 8 hours or so during the day (the panel puts out about 30w).
I also connected an automotive fuse box to the battery, so that I can run 12 VDC if I want to.
Maybe I will put a car stereo in there.
I already have a CB out there, I just haven't really messed with it yet.
That is about as cheap as you can go and have anything useable as far as lights and radio.
I probably could have done better if I stayed at 12 VDC, but most of what I want to run is AC.
One thing, a fan like you use in the house puts a huge strain on a small system. Something about inductive motors and a modified sine wave inverter.
The fan just won't spin as fast as normal, it will get hot, and use more power than it should.
In such a case, it is probably much better to use 12 VDC fans and run them right off the battery, but they seem disappointing.
It is not right only having one large battery, either.
You are suppoaed to use multiple batteries, and 6VDC batteries at that- hooked up in series/parrallel combination.
This gives you more power (amps) at the same wattage.
But it also costs more, so I did what I could.