Since the word deacon means "servant" or "waiter", I serve others needs, primarily in tangible ways like caring for them, feeding them, providing transportation, or paying housing related expenses. In doing so I also speak of Jesus' love and the gospel, so most importantly they can know salvation. I'm involved in various facility needs, decisions on scholarships for counseling, and visitation.
Within the church we have an active Mercy Team and many volunteers in Care Ministries that support all this.