I bought the Unicorn Hairball (that's what I'm calling it) to save my long nails, and while it does make it easier to pull out my credit card, I wouldn't go as far as calling it a "must-have" item. The acrylic material feels a bit cheap, and the design, while cute, is not very practical for everyday use. Plus, the keychain is a bit bulky and not the most convenient thing to carry around. Overall, the Unicorn Hairball is a fun little accessory, but don't expect it to change your life.See full review