There's tons of freelancing sites out there. Come of them have fees associated with them, some do not.
I personally use www.elance.com and provide copywriting services.
I have also used www.getafreelancer.com in the past as well as www.mturk.com (very low paying tasks here and I don't recommend it.)
Another site that functions in a similar fashion to Hub Pages is www.associatedcontent.com. you can upload prettymuch anything (articles, photos, video, audio) if they accept it they will eaither pay you up front for it (not much, a couple bucks) or pay you based on the number of page views your content gets. This is great if you can drive high volumes of traffic.
You could also look into affiliate marketing. Amazon, Ebay, and others all have affiliate programs which pay you to refer people to thier products but you only get paid if the referal actually buys the product.
Adsense is a good way to make a modest income (very modest unless you can drive traffic to your sites.)
You could also search Craigslist. Sound funky, I know, but there are a lot of work-from-home opportunities theres, especially if you're a copywriter, web designer, coder, etc.
sorry I can't be too specific, I'm not quite sure what type of work from home solutions you were looking for. Hope some of those site help you out.
Just from taking a look at your hubs: They contain really great info. I would just a bit of time formatting them and making them a little more eye-appealing. Break up the text with photos and make sure the bullet points are separated.
Feel free to drop me a note anytime.