"Does anyone have other design related podcast recommendations? I have previously listened to clever, and Design Matters with Debbie Millman, and of course TED."

"Forgetting the ice sticking problem and the leakage at the moment, could the silicone feature a collapsible hollow section running, say, along the top or through the core to alleviate the ice expansion, while avoiding 'undercuts' to stop the ice trapping itself."