When cats are content, they like to knead with their paws. While this may feel comfortable, cats rarely do it long enough or on cue so it’s unpredictable. That’s why Japan sells a hand massager shaped like a cat’s paw.
The “paw” contains several balls that someone can use to gently knead your muscles and relax you just like a real cat would do, right before it freaks out and shreds your skin with its razor sharp claws. If the idea of getting a massage by a cat sounds appealing, then you’ll have to get the cooperation of another human so you can both trade massages with each other using a cat’s paw as a massaging tool.