Continuous Charity!

Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “Verily, among the good deeds that will join a believer after his death are these: knowledge which he taught and spread, a righteous child he leaves behind, a copy of the Quran he leaves for inheritance, a mosque he has built, a house he built for travelers, a well he has dug, and charity distributed from his wealth while he was alive and well. These deeds will join him after his death.”

Source: Sunan Ibn Mājah 242