You’ll need this in this office if you are always losing your mug. When a co-worker can’t find their own mug, they will just pinch someone else’s and if it happens to be yours, then tough luck. You’ll have to make do without your coffee for the day.
That’s why you’ll need this – a coffee mug with a hole and a fitting plug. Put your mug in the pantry but keep the plug with you. Then, your mug would be useless to mug thieves. Problem solved!