Ongoing charity (sadaqah jaariyah) is charity the reward of which continues after a person dies. As for the charity of which the reward does not continue, such as charity in the form of food given to a poor person, that is not ongoing charity.
Based on that, giving iftaar to those who are fasting, sponsoring orphans and taking care of the elderly – although these are acts of charity – are not ongoing charity. But you can contribute to the building of an orphanage or home for seniors, and that will be an ongoing charity for which you will earn reward so long as that institution continues to benefit people.
Types and examples of ongoing charity are many, including: building mosques, planting trees, digging wells, printing and distributing Mus-hafs, and spreading beneficial knowledge by producing books and tapes and distributing them.