This week's roundup includes a baby shark petting tank in Los Angeles, heart-shaped pretzels from the maker of the Cronut in New York, the world's largest Mason jar mosaic, and appetizers served in baseball mitts.

On August 19, DKNY launched is new MYNY fragrance with a celebrity-studded activation in New York's Madison Square Park. Guests lined up to grab a heart-shaped pretzel from a customized cart. The treat was created by pastry chef Dominique Ansel, best known as the creator of the Cronut, and its shape was inspired by the fragrance's bottle.

On August 16, Top Chef judge Hugh Acheson hosted a day of canning lessons at a New York farmers' market. At the event, locals helped assemble a thematic mosaic made from more than 2,000 Mason jars. The completed piece, which bore the Ball logo, set a Guinness World Record as the largest Mason jar mosaic.

On August 16, Benefit Cosmetics hosted a breakfast in Los Angeles during the fashion and beauty conference BeautyCon. Along Came Mary Events handled the decor and catering and gave the room an all-pink look that nodded to to the beauty brand's signature hue. Other vendors, including Classic Party Rentals, Balloon Celebrations, and La Tavola, brought in items to match the fete's rosy hue.

A 40-foot-long container became a mini Ikea showroom during a five-stop tour to promote the company's new Miami store. On display July 12 to 27, the container had three room vignettes on the lower level, and the rooftop was decorated with outdoor furniture from the Swedish furniture and home goods brand.

The event was designed to be family-friendly, and children could engage in activities such as drawing at Ikea easels.

Pandora Internet Radio hosted a back-to-school-theme concert August 9 at Santa Monica Pier, and brand activations targeted college students. Kellogg's Krave Chocolate cereal had a brand activation that let guests fill bags with ingredients that can be mixed with the cereal, such as marshmallows and granola. Stoelt Productions produced.

Discovery kicked off Shark Week's 2014 run with its first FinFest, a free fan festival on Hermosa Beach from August 9 to 10. Nearly 3,000 people lined up over the course of the weekend for the opportunity to pet baby sharks.

Six musical acts performed on a stage fashioned to resemble a shark's mouth.

In New York, Scoozi Events recently hosted a dinner with a "childhood memory" theme. Nostalgic dishes included miniature Kobe hot dogs served in a baseball mitt with a side of tater tots in a batting helmet.

In keeping with a nostalgic catering theme, Magnolia Bakery offers seasonal "Back to School" cupcakes. The treats are topped with edible apples, stacks of books, scissors, and other tropes evocative of school days.