The 'Friends' cast and other celebs participating in the 'All In Challenge' -

The “All In Challenge” is spreading like wildfire on social media, quickly becoming one of the world’s most exciting charity initiatives. Some of the world's top athletes, actors, musicians, and moguls are auctioning off their treasured possessions and once-in-a-lifetime experiences to raise money for those facing food insecurity during the coronavirus pandemic. Created by sports retailer Fanatics founder Michael Rubin, the challenge spreads by stars nominating each other after offering up something themselves, and it has already raised more than US$13 million, with 100% of the proceeds going to nonprofit organizations like Feeding America, Meals on Wheels, World Central Kitchen, and No Kid Hungry.

The latest big names to get in on the challenge? The cast of 'Friends,' who are offering the opportunity for a fan and five friends to meet the cast during their announced HBO Max reunion special.

Intrigued? Check out this gallery to see what lavish and intimate offerings you could win if you're lucky or loaded.

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Matthew McConaughey -

The winner and a guest get a trip to Austin to join McConaughey and his friends at a University of Texas (where he’s a part-time professor) football game.

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Kevin Hart -

Hart offered fans a movie star experience, including a speaking role in his next film, along with their own trailer and assistant on set, a stay in a five-star hotel, and first-class airfare.

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Leonardo DiCaprio and Robert De Niro -

The Hollywood elites are offering a walk-on role and the chance to watch them work on Martin Scorsese's upcoming film 'Killers of the Flower Moon,' as well as a ticket to the premiere!

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Madonna -

The superstar is auctioning off her autographed Madam X tour jacket.

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Jonah Hill -

The actor-director is offering an intimate lunch as well as a chance to help him direct his new film for a day.

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Gwyneth Paltrow -

Paltrow will personally hand over her 2000 Oscar dress by Calvin Klein, which she wore the year after she won the 1999 Oscar for 'Shakespeare in Love.' And she'll share a a cup of tea or a glass of wine.

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Justin Bieber -

The pop star will fly to serenade a lucky winner with a rendition of 'One Less Lonely Girl.'

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Drake -

The rapper will lend his private jet to fly the winner to Los Angeles to attend a private party, and then give them tickets to his show.

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Jamie Foxx -

The actor is offering a walk-on opportunity on the set of his new Netflix show with his daughter, called 'Dad Stop Embarrassing Me.'

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Bill Murray and Justin Timberlake -

You and a friend could golf at Pebble Beach in Monterey, California with the unlikely duo who are sure to crack you up the whole time.

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Pink -

The singer is offering the chance to learn how to do aerial stunts on silks and other aerial apparatuses with her and her personal aerial choreographer, Dreya Weber.

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Ellen DeGeneres -

The comedian offered the opportunity to co-host her Emmy-winning talk show.

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Will Ferrell -

The actor is offering an opportunity to join him for an LAFC Matchday Experience for four. Fans of soccer rejoice!

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‘This Is Us’ cast -

The show is offering the winner and a friend the chance to have a meal with the cast and crew on set, as well as a speaking role on Season 5, which entails VIP treatment with their own hair, makeup, and wardrobe treatment.

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Jimmy Kimmel -

The TV host is offering the chance to sit in with his band on the show.

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Tom Brady -

The NFL star offers the option of a private workout or a private dinner in the Tampa area after attending a game together, along with gifting the winner with first home game-used jersey and cleats.

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Magic Johnson -

The Los Angeles Lakers legend is offering the chance to sit courtside at an LA Lakers game, play H.O.R.S.E with him, and he'll even come to your town and spend an hour with you.

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Ciara and Russell Wilson -

As the ideal power couple to hang out with, Ciara and her pro-footballer husband Russell Wilson are auctioning off a double date with them.

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Shaquille O’Neal -

The former NBA star is offering a three-on-three pickup game for you and four friends.

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Alex Rodriguez -

A-Rod is offering a one-hour batting lesson and lunch, and, who knows, maybe a look at J.Lo herself!

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Dwyane Wade -

The retired NBA star is highlighting his wine company. He's offering the chance to attend the October harvest in Napa Valley, be part of the winemaking experience (like actually stepping on the grapes), and have dinner with him.

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Peyton Manning -

You and some friends could have a round of golf and dinner with the NFL legend in your own hometown.

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Eli Manning -

The younger Manning brother will personally deliver the 2012 Corvette Grand Sport Convertible Centennial Edition he won after being named Super Bowl XLVI's MVP.

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Tony Hawk -

This legend is offering a personal skate lesson for you and a friend, in his backyard or at his ramp.

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Ryan Seacrest -

Seacrest is offering a chance to be his radio show co-host, along with tickets to visit the sets of ‘American Idol’ and ‘Live with Kelly and Ryan.’

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Megan Thee Stallion -

The rapper is offering the chance to be in her music video, including VIP treatment with hair, nails, and makeup. She'll even teach you the choreography herself!

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Meek Mill -

You can get the rapper's personal 2018 Rolls-Royce Phantom, a symbol of his inspiration and success, as described on his debut album 'Dreams and Nightmares.'

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Quavo -

The rapper is offering a lesson in making beats, the product of which he’ll then rap over and give you producer credits. Then he says you'll take one of his Lamborghinis for a ride, and finish it all with dinner for you and your friends.

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Miguel -

The singer is offering the full VIP access backstage experience, flying the winner and a friend first class to attend a show, and the chance to hang out afterwards.

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Robin Thicke -

The singer is offering to write a personalized love song for the top bid.

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Gayle King -

King is offering the ultimate NYC experience: breakfast, lunch, and dinner with her at her favorite spots, behind-the-scenes access to the CBS Morning Show Studio, and tickets to a Broadway show.

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David Blaine -

A magician never tells, but for charity Blaine is offering a private magic show for you and up to 50 people, followed by a private lesson for you and up to 10 friends to show you some of his top secret techniques.

See also: Celebrities who've donated to those affected by COVID-19.

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