You can earn the benefits of Saqadah Jariya by donating to the development of drinking water plants and hand pumps in the remote area where drinking water is scarce. There is a strong belief that as long as the people or any living thing, including animals and plants, benefit from that water, it will benefit you as well. Indeed it is a business of profit in every way. Spiritually and physically, you earn a lot—a lot more than you have invested.
Donate as much as you can in this holy month of Ramazan in the form of zakat, sadaqah, Ramazan donation, or a general donation to support and help your brothers, sisters, children, and elders in need which are your family according to the relationship of humanity.