(part time or full time and working at home)

Disclaimers
There's no catch and we are not trying to sell you an ebook or anything.we are not even signing you up for a newsletter. This list was put together. It may change your life. Or it may annoy you enormously because of its brevity.
We have put together a lot of these ideas from thousands of hours discussing businesses for sale with their owners. They've shared with me how their businesses operate, how they make money online, how they built their businesses up etc. They've given me access to their traffic stats, their earnings and accounts and tax figures. Many even gave me access to their Adsense or other "main earner" accounts.
Most of these business ideas can be run from anywhere in the world, even the United States, Australia and other non-English speaking countries. For consistency sake all figures are quoted in US dollars.
Each method is summarised in a single small para so appreciate it's not the complete unabridged version. And, no, we haven't tried each one so out of the 101 business models to make money online 102 may be completely dud. But, we do intend expanding - in due course - on some of the money-making ideas that worked for me.

Finding business ideas:

1. Spend all day browsing Site For Sale forums (like the list we have here) for the myriad ways people earn money online. People looking to sell their sites actually tell you how they make money! Pick one that suits you. Research it a bit and away and start your own business. Or use a search engine to find ways to make money online. It seems to be so easy that it's almost impossible to find someone who doesn't know how to do it. (But why stop at one search engine (SE)? Most people get to less than 1% of the top qualify info they're seeking because they use just one SE like Google, don't have the vaguest of ideas of the advanced search features available and don't know the benefits to be had using specialised SEs, local SEs etc. )

2. Bundle the two above to tell other people how to make money online. They always want to know. It doesn't matter if you don't know yourself, you can still charge them for it. We obviously don't have a clue as we are giving it all away. You can now ignore everything else we say. But don't go spending money on internet cons promising to make you a millionaire.

3. Be more inventive with your search. Look for small business franchise newsletters. Or for home jobs in your particular niche or hobby.
But using "search" is just the start of the game. There are simply so, so many ways. We hope you hang around to find out.

4. Like the guy you can pay to stick a message in a bottle for you and throw it into the sea. He's made tens of thousands of dollars already. And there are several others like him in all parts of the world. Do you live near a sea or river? Or join the cleanup of those bottles and get your council to contribute. 

5. The dot com gold rush made many millionaires but there's still plenty of money in domain real estate and still some good catches available. A good dot com may be difficult to find now. But there are a lot of gTLDs and ccTLDs from the .info to .eu to .tv to .co.in and they all present opportunities being discussed in several good forums. Put your thinking hat on, buy a famous word domain for a few dollars and put it up on the domain selling sites.

6. Lost your thinking hat? Hang out at SEDO. DNForurms, Afternics and other places where domains are bought and sold. Provided you learn enough about the market to recognise bargains you could make a living from just buying existing domains and reselling them.

7. If you're smart you'll run dictionary checks against available domain names and auto-check them against search volumes (using OST, Wordtracker etc.) for that term and Pay Per Click (PPC) rates in the major ad networks (example) to work out which ones are likely to be more profitable (how to make money with PPC). If you can pick up the domain for a profitable term that's searched for often you can use a domain parking program. Or post a little bit of relevant content and get a link or two ... and the search engines will start sending you traffic. If the phrase people are typing in coincides exactly with your domain name it gives you a great head start with SEs.

8. If you're smart and a linguist you'd be doing that in multiple languages. And not paying for any domain till you've tried it free for five days to see if it does indeed get any type-in traffic (and how well that traffic converts). After you've tried it for five days and dropped it there's nothing to stop you immediately picking it up again for another five day trial. Strange, but true. It's not kiting, it's legal.

9. Misspellings. Massive opportunities still exist in the misspelling/typo market. People trying to get elsewhere land on your site instead ... and you sell them stuff (or use the domain parking idea). Some even tempt fate by making PPC opportunties out of typosquatting on trademarks. Finding typos has never been easier. There are many tools that will find misspellings for you. How easy can it get?

10. Domain parking and type-in traffic: People sometimes guess at URLs. If they want a plumber they may try plumber.com though they've never used that site themselves. Find terms that people may be typing in (I will provide a detailed guide to this when I get a chance), buy the domain and populate it with ads. There are several ad programs to monetise your parked domains. Or combine this with the previous idea to buy plummer.com or similar typo domains to make money online.