The NFHS instructional online basketball officiating courses have been made available for free until July 1. Maybe something to communicate to crews or training groups or assigning pools or to do yourself while sequestered or quarantined or just experiencing the off-season with no other discernible social life.
Scroll down this list of offerings for "Officiating Basketball" and "Officiating Basketball: Crew of Three":
https://nfhslearn.com/courses