The Mardi Gras season always starts on Jan. 6 and ends on Fat Tuesday, which this year falls on Feb. 16. The season is usually marked by extravagant balls and parades where costumed riders throw trinkets to the mobs of people packed along the parade routes. The coronavirus has put an end to those large events. But that has not stopped notoriously creative New Orleanians from coming up with socially distant ways to celebrate.