Due to a limited-edition collaboration between McDonald's USA and the streetwear brand Cactus Plant Flea Market, the popular burger chain will

start offering Happy Meals for adults starting next week. The signature happy meal boxes, which are made to look like toy houses that you can open up at the top,

have been redesigned and given a sort of makeover in the style of the Cactus Plant Flea Market. When this promotion starts on October 3,

customers who buy the Cactus Plant Flea Market Box on the McDonald's App will automatically be entered for a chance to win free exclusive merchandise,

like T-shirts, a Grimace Chair, and other custom Cactus Plant Flea Market and McDonald's items. 

McDonald's Happy Meals for adults come with either a Big Mac or 10 pieces of chicken McNuggets, along with fries and a drink to make it a full

meal. And since these are happy meals, when people open them, they'll find one of four collectible figurines made just for the Cactus Plant Flea Market Happy Meal box.

The toys will look like one of the characters from the burger chain: Grimace, the Hamburglar, Birdie, or a new character called Cactus Buddy.

McDonald's also said in a press release that there will be a variety of merchandise available as part of this partnership. The release said that these

items will explore "the stories between the two brands and show Cactus Plant Flea Market's uncanny ability to tap into deeply specific nostalgia."

The New York Post reported on Tuesday that the Cactus Plant Flea Market has become so popular that the company can sell hoodies for as much as $1,000 on the StockX online marketplace.

Happy Meals for adults at McDonald's 
Tariq Hassan, McDonald's USA Chief Marketing and Customer Experience Officer, said,

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