Fiverr its a great place to earn without investment. Or you can see at buy-sell-trade section . Many Forum users need people to work for them.!
It entire;y depends on your idea and your skills , for me i earn 10$/2 days with my usual basic ideas and some skills like marketing...
Fiverr if you have something to offer for 5$ , Or a website with some ads? ( but you need to have some traffic and users to check it )
How about article writing, micro jobs? Or you can go to oDesk and take article spinning gig? Be someones virtual assistant, there are hundreds ways be creative. In IM money is everywhere around us people just don't see it.
Go to www.microworkers.com and do some random jobs there. Now you probably need that $30 quick for something else. I suggest you then make $60, use the $30 you need for whatever and reinvest the rest. What I suggest you do is get a squeeze page a sales funnel created so you can start creating lists. There are free ways and paid ways to do this. You can also find many free PLR's to giveaway to encourage people to sign up for you list. If you are interested, please view www.buildlist.org for tips on how to start your list from n00b up.
Hello friend, This is very large sum, this type of earning can be only achieved with blessing from the God. Good luck bro.
Try file-sharing affiliate programs... some are really profitable, but to earn $5 in half of an hour you should be with that programs for at half of a year!
If you want that amount of money with no investment, you're talking about sites like Fiverr, Amazon Mechanical Turk, Cloud Crowd.
If you're enough of an idiot to have to admit you have no skills, I'd listen closely to Laceygirl's advice.