Trivia Day (January 4)—Games night, featuring Trivial Pursuit. Random Acts of Kindness Day (February 17)—Progressive party in which you arrange a group of friends to perform good deeds for strangers (helping an overburdened mother or disabled person at the grocery store, working at a food bank), and then enjoy a round at a local bar. Earth Day (April 22)—A tree-planting or gardening party, with a picnic as the focus. Towel Day (May 25)—A costume party in which guests make their getups from towels. Best Friends Day (June 8)—A brunch honoring best friends—yours and other people’s. National Hot Dog Day (July 22)—Weiner roast! You can also invite your friends with dachshunds. National Homeless Animals Day (August 20)—A pet adoption or dog party. Talk Like a Pirate Day (September 19)—A costume party in which guests dress and talk like pirates. National Coming Out Day (October 11)—A celebration for all your gay, lesbian, bisexual, or transgendered friends. Sandwich Day (November 3)—A potluck to which your guests bring their favorite sandwiches to share. Human Rights Day (December 10)—A fundraising party in which guests each bring a cash contribution, which you donate to a human-rights organization, such as Amnesty International.