There are a couple of different options here.
One is to take a look at what things you are seriously interested in.
Maybe you have a hobby, or maybe have simply have a real curious interest in a particular subject area.
If you can isolate one or more areas, then consider setting up a website to provide news, views, and information on that topic. You can also look at selling products around that interest by developing an ecommerce section.
For example, if you were interested in model trains, you could set up a website all about model trains and railways: post some tips and information on what you've found works best, the experience, and different products you use (ie, gauge, train types, rare models, fun times with kids, etc).
You could also set up a Google News alert based on keywords such as model trains and major manufacturers, and post news items about these in a dedicated news section.
And you could also set up a forum that provides a meeting ground for similar enthusiasts.
A simple revenue model would be to take advertising from vendors and shops, but you could set up your own shop using something like OSCommerce, Cubecart, Zen Cart, etc.
No products? Then run a search for dropshippers who will mail out ordered items direct to customers with your business name on the invoice.
So as the website develops, it becomes a significant authority on model trains, attracts knowledgeable people in this area, and also attracts customers to your site.
If you're selling kits at $50-$100 per order, and 30% is profit, then it'll only take a few sales per day to earn over $1k week in profit. If you aggressively push on this via PPC marketing you can increase your sales and profit levels much higher depending on how much effort you're willing to put into this..
Sounds like hard work?
It is and it isn't - it takes time and effort to research what you can develop and sell, and maybe even learning basic webmastering skills - but the internet is your friend in providing much of this information already, and for free. If you can put the time in to look, you can reap the rewards from this.
And setting up a website yourself costs peanuts. I built my original business with little more than a $20 webhosting account.
My brother is in a similar situation - he's been working in the fireplace business for a few years now and hates his job. He actually walked out last week, but went back because he needs the cash. He loves the subject though, just not his boss.
So this month I'm going to set up the internet side while he connects with suppliers. By June 1st he'll be running his own business elling them online with my company backing him for a minority share that I'd estimate as earning $5k-$10k in monthly profits all things going well.
The other option is to simply look for opportunities where you can find them.
For example, someone came around to clean our house windows last week. He charges $10 to do it. Doesn't sound like much, but it only takes him 10 mins to do the job. That means he should be looking at around $60/hour if he works efficiently just getting the job done.
Another area is landscape gardening - lots of people near where I live would love to do their gardens better but don't have the time. I just landscaped mine. If I were broke, I'd use it as a showcase and offer landscaping options at different pricing levels for them to consider.
Look for similar opportunities in your area that require little skill but a little dedication, and a market demand.
Overall, try and find something that may offer either some interest or simply opportunity and work on that.
The big problem is most people are comfortable with their lives and don;t like taking risks fully stop, and going into business is a risk. But as in all of the above examples, long-term profitable business models can be built with little actual investment.
Entrepreneurs aren't special. They simply notice opportunity, and dare to act on it because few other people do.
Anyway, free business consulting for you there - I just hope some of that helps the people reading this.