What about this for power at camp?

First off, karma for the find. I think a solar generator would be a great way to generate a nominal amount of power, especially considering I've never been on the Farm when there hasn't been an adequate amount of sunlight.

The XP-Solar looks pretty good if you aren't going to plug too much into it. Some back of the envelope calcs;
10 amp hour battery (an avg car battery is ~400 amp hours as comparison) @ 12 V = 120 watt hours
5 watt max solar panel * 14.5 hrs sunlight * 60% panel efficiency (not high noon solar radiation all day etc) = 43.5 watt hours/day panel output
43.5 watt hours * 70% charging circuit efficiency = 30.5 watt hours/day actual charge
so you are not going to be able to fully recharge the battery daily on solar alone.
I came across an Ipod charger rating of 12 watts, that sounds a little high, it probably has some wiggle room, lets say an Ipod draws 10 W. If it only runs an Ipod the power unit will give you 12 hours, providing it can deliver 10 W all the way to the end of charge (btw, it is NOT a good idea to run even a deep cycle battery like this one's AGM unit down to 0 charge). If you start adding a fan (3 W for a small one), LED camp light (2 W), Ipod speakers (~10W?) you are talking about 25W draw (which isn't really a lot, compare to a 100W incandescent bulb) which gives you ~5 hours run from the charging unit. So it sounds like it wouldn't work, but the XP Solar can charge from a cigarette lighter! Given that an avg car battery is ~400 amp hours, you get a bunch of charges before you run your battery dead. If you are camping near your car (or bring an extra 12V battery and jerry rig leads) you can top off the battery every day so you would probably be in good shape! I haven't used any XPower products myself but I have heard good things about them.
Sorry if I bored anyone, sometimes Scientist Leo just needs to get out. Also, I didn't double check my math, if anyone sees a mistake, by all means call me out on it.

Now is the time to look for a used Honda EU (1000 or 2000) series generator.
Check out Craigs list, there are desperate people out there that need cash.
Then you can run the fans, charge the batteries on not p-off the neighbors.

How handy are you with electronics? It shouldn't be a huge deal to actually rig up something that will work and not shoot sparks into the next tent. Buy a cheap car battery or better, a deep cycle marine battery ($50-80), a charger ($22) and an inverter ($30 for nice one @ 400 W). Charge the battery at home, hook up the inverter at 'roo and you're good to go! If you've had problems before (you mentioned blowing fuses and squealing) chances are the problem is the inverter. The small plug into lighter outlet ones are really sketch, something like;
tinyurl.com/avtyy4
should work great. I don't mind putting together a parts list and basic plans if you want, just let me know (goes for anyone else too), I'm starting to think of doing one myself.

I used a battery from Pep Boys and an inverter last year and it worked splended for my needs. We used it for cell phones, ipods and my magic bullet(twice). Just make sure you have it charged before you leave for the farm and you should be fine.

It should last you if the battery was fully charged before you went and I also think that you are going to have to have an actual battery charger that is made to charge batteries. I could be wrong tho.

Basically lead acid batteries (like in a car) really do not like to be run down to zero charge. Sulfation of the lead plates generally starts to occur below ~75% charge and this reduces the battery life. Your regular car battery is designed to give a large amount of current in a short time (starting) and then getting charged right back up. They are particularly susceptible to sulfation. Deep cycle (aka marine batteries) are designed to give a lower amount of current over a longer time. They are less susceptible to sulfation and can be run down more times than can a "regular" battery. They still will suffer some degradation but it will be less.
As far as the inverter goes, 2000w is really pretty beefy. A blender will probably pull 400-500W, an espresso machine maybe 1000W? I don't have time to do the math right now but a regular battery shouldn't be taxed too much over the course of 'roo providing you are not planning on running a tiki bar. Even a 2000W inverter will only pull what it needs from the battery so I don't think it should be a problem.

Ummm, I wouldn't. First off you run the risk of draining your car's battery to the point of damage or not starting after 'roo. I also don't know if a car battery can safely take a charge directly from another one. When you jump start a car you don't really charge the battery from the jumping car, you just give the dead car enough juice to start and then charge its own battery from the alternator. A car battery can, quite spectacularly, dump a lot of current across a short circuit (like a dropped wrench), I don't quite know what would happen if you hooked up another battery. It wouldn't be like jumping a car, you'd have to connect (-) to (+) rather than (+) to (+). Even if nothing extremely bad (something go boom) happened, I don't know that either battery would be happy. I'd really not recommend doing it.

I'll probably be rigging up something similar with an inverter and a Yellow Top. I'll probably wind up building a little enclosure for them too, maybe out of mdf if I can manage to protect it from the morning dew/ nighttime moisture.

After Katrina, we had a bunch of flooded VW's from a dealership that had little solar panels with cigarette lighter adapters to top off the batteries while the cars sat in the lot. I wish I could've kept one, as it would've come in very handy at these summer festivals.

It depends on what kind of generator it is, for $150 I'm going to guess it will be quite loud.
A Honda EU1000is generator will set you back around $650-$700, this kind of generator will be quiet enough to have it run next to you and have a conversation. They run around 59dB.

...or you were making drinks for everyone within earshot .

^^ Not bad. +1 for the find.

Neat idea, but it would take over 70 hours(*) of peak output from the solar panels to charge the battery. Might work though as a low power backup battery at home. The major problem is that high wattage photo-voltaic (PV) cell are still $$$$$

(*)7.5 amp hours (the page just said amps but I'm assuming) * 12 volts = 90 watt hours for the battery
90 watt hours / 1.26 W (max output of PV cell) = 71.4 hrs to charge

Karma for naughty toys at roo.