im not sure how i come up with projects ... they just sort of happen.
what i usually do is just take photographs.
enjoy making the exposures, and meeting the people seeing the "stuff" ... not just once but a few times
and a few more times, and eventually a project happens ...
the most important thing is not have have any preconceptions or a closed mind
and be open for anything ... like true-love, a project happens when you least xpect it.