Gr8 Home Cast Iron Black Japanese Style Teapot Warmer Stove Tea Pot Tetsubin Tea Kettle Holder Tealight Candle Stand Heater Base with Hobnail Design. A simple tea light fits easily within this Hobnail design cast iron warmer, allowing your teapot to remain perfectly toasty as you enjoy cup after cup throughout the day. Gr8 Home Cast Iron Black Japanese Teapot Warmer Stove Tea Pot Tetsubin Tea Kettle Holder