Brands including Nespresso, Chilly’s and Thermos have ... this vacuum-insulated dream from KeepCup features a leak-proof, screw-fit sipper lid for all your morning caffeine needs.

But, last week my pink KeepCup exposed a rather shameful personality trait of mine: I'm very lazy when it comes to washing up. Usually this doesn't really matter, because my unquenchable thirst ...