Ok I'll just spew ideas down;
The secret is to; give people what they didnt know the needed. That is the ultimate good/service.
Charity always breeds charity. If we all donate say 100US to an account and 10,000 of us do this, then with the 1 million we encourage other massive organisations to support a humanitarian aid scheme you will multiply the millions many times over.
You always can buy and trade in second hand goods. I make extra money this way and is a favorite pastime of mine

You can buy things from local salvage yards for a tiny % of what you can re sell it for fixed up. It takes a lot of time to look and find the things but you can make a lot of money deal in scrap. Often people throw out very expensive white goods and there is only a minor problems with them, but they are too impatient to bother working it out so they just buy something new and throw out the old.
I have also dealt in restoring spas and building a case around them and then flogging them off for $3000+. I will buy a spa shell from the salvage yard for $50 or so, it has holes in it and all. With about 10 hours of labour you can repair it so its even better than new. Then you can add jets, color, whatever you want. Then we build a wooden frame around the entire spa. Costs about $500 for all the material and you can sell it for $3000 easily (given that they can go for $8000+). Recently I bought a 6 seater spa for $30, and I rigged up a heating unit for it for less than $10. I got a pool pump and filter to go wtih it for less than $30, so in my backyard now I have a $70 6 seater heated spa. Cheap!
I like to restore old and sell it for profit. Theres a satisfaction you get from saying, I repaired something that otherwise would have gone to waste and now it has value again. There is only so much you can actually do yourself though in this realm, you hardly will sell a million dollars a year if you do not make changes to your efficiency and get more hands working with you.
About once every two months I will take all the stuff I haven't sold to a weekend local market. There I will barter with people prices for my stuff, very fun. With my entire truck full of stuff I can usually go home with about $1,000+ profit after 6 hours of sitting at the shop. I can also usually get $20+ extra delivering the heavy stuff people can't carry themselves. Whitegoods certainly is a good way to make money especially if you sell quality products that you know work well and wont break down.
Wouldn't it be nice if everyone in piano forum wrked together to write a manual on piano playing for all levels. Certainly there hasnt been a book written by hundreds of pianists, Im sure it would be a very interesting project!!
We could always invent a perpetual motion engine
