The Cubs in Shining Armor theme revolves around the ideas of honor and service. So organize a summer service project. Knights went on quests, so you could have some sort of fun “quest scavenger hunt”.
Here is what the old program helps said about this theme:
Let our heroes shine as they welcome new Cub Scout Knights into their den and pack. Learn about chivalry and the rules of the Roundtable. Make medieval costumes and design your own coat of arms. Find out what life was like in the times of castles and knights. Cub Scouts can be “knighted” as they advance in rank.