I realised I'd made a mistake, but for the life of me, I couldn't work out how. It was one of those moments when the blindingly obvious just wasn't obvious. However, in the end, I quite liked my not quite ball, not quite star.
Bear likes it too. Although it has straight sides, the middle is puffed up like a ball so is perfect for kicking around. If Bear likes it, it's not a mistake, just a happy chance new design.
Again, this one is filled with catnip, toy filling and a bell, and to show you the obvious did jump out and bite me, I have a ball to show you tomorrow.