Produce something in actual form which helps future generations as well as present generations - this could be INTELLECTUAL (a) photograph , (b) book , (c) map, (d) thought , or can be MATERIAL
(e) building ,(f) hospital, (g) clinic , (h) trust , (I) donation (2) the beauty is that everyone can contribute (3) those who don’t have money or wealth can contribute by sharing knowledge even feeding crows with one fourth of your breakfast can help creations of god who will be more grateful to you than perhaps those who you think are closest to you