March Madness Souvenir is a term used to describe memorabilia related to the NCAA Division I Men's Basketball Tournament, which is held annually in March. The tournament is often referred to as March Madness and the souvenirs can include items such as t-shirts, hats, mugs, and other items with the tournament logo or team logos. The crossword solution for this term is NET, which is a reference to the basketball NET that is used during the tournament.