Grind

The young dancers of the Hampton Ballet Theatre School in Bridgehampton will stage "Cinderella" on Friday, Saturday, and Sunday at the Bridgehampton School.

Epic Martial Arts is teaming up with the Retreat to offer a self-defense and safety awareness class on Monday, May 15, for women and girls 14 and older.

The May Day 5K, a charitable run and walk initiated by Dylan Cashin and Ryleigh O'Donnell, two East Hampton High School students, will return for its second year on Sunday. Participants will set out from Main Beach at 9 a.m. rain or shine. Registration is $30 in advance at bit.ly/44dOmH4 or $35 on race day.

The Hampton Lifeguard Association's summer kick-off party, which supports East Hampton's lifeguard, junior lifeguard, and Nipper Guard training programs, will be held on Saturday from 3 to 8 p.m. at the Clubhouse in Wainscott.

The Parsons Blacksmith Shop in Springs will open for the season on Saturday from 10 a.m. to 2 p.m. with a free series of tours and live demonstrations of traditional ironworking tools and techniques.

May is National Bicycle Safety Month, and last Thursday the East Hampton Town Board passed a resolution declaring it Bike Safety Month in the town.

The FoodLab at Stony Brook Southampton has vegetable and herb seedlings available at its greenhouse behind the student center on campus at 39 Tuckahoe Road.

The Suffolk County Water Authority has more than doubled its account credits for thrifty tech, including low-flow showerheads and "smart" irrigation controllers.

The Sag Harbor School District has scheduled a public forum "addressing the proposed acquisition" of five wooded properties on Marsden Street for Wednesday at 6:30 p.m. in the Pierson Middle and High School auditorium.

Simultaneously on Saturday, across the South Fork, several organizations are holding Earth Day cleanup events and are seeking volunteers to pitch in.

Fabian Almazan and his quintet will play at the Southampton Arts Center on Saturday. The concert will be preceded at 5 p.m. with an exhibition of photographs by Ric Kallaher and a pre-show reception.

Earth Day is Saturday, and GeekHampton on Bay Street in Sag Harbor is celebrating with three days of e-waste recycling. Starting Thursday, you can drop off your old computer gear between 10 a.m. and 6 p.m.