Is it a bird? A plane? A giant bone shaped stuffie?
Mom said it's a pillow. Her new job has her at a desk all the time instead of being on her feet a lot so her neck is kinda sore, not being used to it. So Dad (a mechanical engineer) made this pillow by cutting pieces of bone shaped fabric and sewing them together and stuffing it so it cradles and supports the neck for some couch napping or bedtime.
Dad will demonstrate before he takes me for my walk.