Some ideas for bringing a smile to Dad’s face this weekend, plus two of the city’s coolest annual music celebrations.

Flatiron/Union Square

Father’s Day Scavenger Hunt and BBQ
Comb the Union Square area to solve clues and complete tasks with your family and gather for a dunk-your-dad BBQ afterparty.
Saturday, June 16, 10AM-1:30PM
Sidebar, 118 East 15th Street at Irving Place
$25, kids under 3 free

Madison Square Kids’ Concert Series 2012
The 10th season of this series of free outdoor performances for children and their families on Tuesday and Thursday mornings promises a summer of music and fun starting with Audra Rox on June 12.
Tuesdays and Thursdays, June 12 to August 9, 10:30 AM
Madison Square Park
Free

Williamsburg

Brooklyn Waterfront Craft & Specialty Beer Festival
The Brooklyn Waterfront Craft & Specialty Beer Festival brings you the opportunity to sample the best in seasonal beers outdoors on the Brooklyn waterfront with spectacular views of the Manhattan skyline.
Saturday, June 16, 12:30-9:30PM
5 North 11th Street, Williamsburg
Tickets: $55-$135

Northside Music Festival
This relatively new, masterfully curated music event has been bringing New York City the best new and classic mold-breakers and room-shakers for three years running–this year’s highlights include GZA, Kool Keith, Olivia Tremor Control, Black Dice and Destroyer plus films, panel discussions and parties–via Williamsburg, Brooklyn’s North Side.
June 14-21
Times and venues vary, see event site for badge and ticket info.

Financial District

Bang on a Can Marathon
Bang on a Can returns for its 25th year with this incomparable 12-hour super-mix of innovative modern composition performed by Bang on a Can All-Stars, Pauline Oliveros, Vijay Iyer, Alvin Lucier, Todd Reynolds, and many more. Drop in and tune in whenever you like during the performance or stay for the day and night.
Sunday June 17, 12 noon-12 midnight
World Financial Center Winter Garden
Free

Brooklyn Heights/Downtown Brooklyn

Atlantic Avenue Extravaganza
The Atlantic Avenue BID shows off its best with this summertime sidewalk celebration. Tastings and drink specials, demonstrations, live music and dance performances and plenty of cool shopping opportunities make this community celebration more festival than street fair.
Saturday, June 16th, 1:00PM-4:00PM
Atlantic Avenue from the BQE to 4th Avenue
Free