They should learn Korach to stay away from his deeds, and more importantly, they should learn from “Ohn” to listen to one’s wife, and stay aloof from trouble.
Of-course being generous with Terumo & Ma’aser & Terumas Ma’aser as delineated in this week’s Parsha is also a great topic.
I won’t mention to talk about being smarter than Korach who dipped his entire Tallis in Techeles, because I am being “Dan” the Chosson “leChaf Zechus” that he has already been compliant with Mitzwah of a Tallis Godol for many years already, as per Halocho.