In my last thread andover_boy complained that the "airzooka" is too loud to use in the office. So here's something more office based. I didn't know that it existed half an hour ago, but I've ordered one immediately... for the simple reason that I'm fed up with people nicking my mug.
It's really simple. It's a mug, with a hole near the bottom. You have a rubber plug which fits this hole, which you keep about your person. If someone tries to steal your mug then they'll realise it's useless or, better still, get covered in tea when they don't see the hole. Thus, your mug is always available, yet you don't have to carry the whole thing around with you.
Play.com are, once again, the cheapest stockist for this item that I've seen. They have it for £8.99 with free delivery, 5% off using the RAC code and 4% QuidCo cashback.