Mariah teamed up with MSCHF for a collection of booster packs during the 2021 holiday season. The contents of the Mariah Carey booster packs were a secret until they were ripped open, but they could include anything from Mariah's Amex Black credit card to a Target receipt to a movie ticket stub for the 2001 film Glitter. It wasn't not all goofy little cards though, you could also get some real gifts, like a $100 Macy's gift card, $50 to Panda Express, or $25 to Build-A-Bear workshop.