Mayday! Underground Crafts + Art offers carefully curated items that put an unconventional spin on traditional art and craft. At three annual events, Mayday! features more than 150 total artists and small businesses from the Greater Rochester area. Shoppers at Mayday! find a fusion of handcrafted modern, hip and trendy creations with family friendly DIY features. The first event was held on May 1, 2010.