Routemaster Red Double Decker Bus Teapot (500ml) Fun Novelty Routemaster Red Bus Teapot. If you are looking for a novelty gift that&#39;s practical and looks great, then check out our funky kitchen and ceramics range. The range is made from dolomite ceramics and finished in a high gloss glaze. Each comes in a decorative gift box to complete the look, plus if its a kitchen item then dolomite is food and microwave safe but cannot be put in the dishwasher.