Plug Mug is a clever stuff to prevent your mug to be borrowed by your office mates or friends without your permission. It has a hole with a plug to shut the hole tight so you can use it to pour beverages into the mug. Without that special made plug, no one can use your [...]

ON/OFF Mugs? Sounds like a lamp switch to you, right? I do thing so, at least until I saw the the mug. It’s not about a switch to turns on and off. It’s about the chemical reaction to hot temperature to changing the color and wording. On the default state, you will get a black [...]