2) Donate a wheelchair to a hospital. Patients use, you earn.
3) Give a copy of Qur'an to someone. People read, you earn.
4) Place water cooler in a public place. People drink, you earn.
5) Plant a tree. People & animals use for food or shade, you earn.
6) Teach or Tell Some one good thing ( Verse of Quran, Hadith, Dua etc ) And the easiest of all is to share this message with people.
IN SHA ALLAH! SUBHANALLAH!