Above: The first version we spotted? The indestructible Insulated Stainless Steel Coffee Cup and Saucer , which keeps “any coffee, cocoa, or cuppa hot all morning.” It’s $45 from Garrett Wade.

If the saucers are large enough, the mugs should be able to fit on top of one saucer. This hack is great for if you have a coffee mug set for entertaining. It's not ideal for your day-to-day mugs ...