Hermione loves her tin foil sheet (like the thermal sheet you get wrapped round you when you finish the marathon)
its light so sh can move it, its large so no matter where her hands are she can grab it, doesnt get frustrated. She likes the sound and likes moving it with her legs, oh and of everything i brought for christmas this was the cheapest - £3.50 and it is her favorite, lays with it for hours, sounds mad but try it it is amazing