McDonald’s is collaborating with Cactus Plant Flea Market for an exclusive drop. | Source: McDonald’s/The Toy Book

The kidult trend is making the jump from the toy department to the drive-thru.

Fast-food giant McDonald’s is collaborating with streetwear brand Cactus Plant Flea Market (CPFM) to release a first-of-its-kind Happy Meal box design and collectibles assortment. The line drops Oct. 3 and is available until Oct. 30.

Birdie (from left), the Hamburglar, Cactus Buddy, and Grimace are available to collect. | Source: McDonald’s

Since the Happy Meal was introduced in June 1979, it’s cemented McDonald’s as one of the largest toy distributors in the world. Consumers can tap into the nostalgia and proudly purchase a Big Mac or a 10-piece Chicken McNuggets — accompanied by a medium fries and drink — and open up the box to find one of four collectible figurines. Made exclusively for the collab, find Birdie, Grimace, the Hamburglar, or Cactus Buddy among the food, all enclosed in a specially designed box.

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“We’re taking one of the most nostalgic McDonald’s experiences and literally repackaging it in a new way that’s hyper-relevant for our adult fans,” says McDonald’s USA Chief Marketing and Customer Experience Offer Tariq Hassan. “With menu favorites like the Big Mac and McNuggets at the center of the collab, this is another way we’re reigniting a new generation’s love for our food and the brand.”

Win apparel through the McDonald’s app or purchase it online. | Source: McDonald’s

Exclusive merch is also on deck, with a CPFM T-shirt, a hoodie, a Grimace chair, and an acrylic sign from McDonald’s set. While the box will be available in the restaurant, in the drive-thru, by delivery or on the McDonald’s app, if fans order specifically through the app, they’ll be automatically entered for a chance to score the merch for every week. The merch will also be available for purchase at at 11 a.m. ET.