My cat Mushroom loves bells. I bought her a stuffed mouse with a bell on it at the end of a length of string. She ripped off the mouse that was supposed to be filled with catnip, which it wasn't as she didn't even look at it.
But she can't get enough of the bell at the end of the piece of string. She hits it when I wave it in front of her face and chases it around on the ground and then sits on it and looks at me as if she has won a prize. She keeps me amused instead of the other way around.