“Family Home Evening Ideas,” Liahona, June 2015, 3
“The Glorious Day of Priesthood Restoration,” page 24: Consider explaining how the priesthood has been passed down by drawing a simple line from one person to another, beginning with Adam and continuing on through the other Old Testament prophets and then from Jesus Christ and His Apostles to Joseph Smith. You might try memorizing the words John the Baptist spoke when conferring the Aaronic Priesthood upon Joseph Smith and Oliver Cowdery, as recorded in Doctrine and Covenants 13:1, and discussing the significance of that event.
“Mia’s Testimony,” page 74: After reading the article together, you could discuss the “how” of gaining a testimony: praying, reading scriptures, listening to prophets and apostles, listening to other people’s testimonies, bearing your own, etc. Talk about how testimonies can be like a light. The parents could then bear their testimonies and invite their children to also share testimonies or their feelings if they desire.