If you're not quite ready to start your own nonprofit, you could try running some pilot programs under a fiscal sponsorship arrangement with an existing nonprofit. Typically a fiscal sponsor is a nonprofit entity that agrees to take on many of the administrative tasks associated with your project in return for a percentage of the funds you collect. As with all things, there are advantages and disadvantages to this option.
There are likely a number of entrepreneurship research resources that overlap with the research needs you may encounter while considering starting a new nonprofit.