Of course, if you work in an office, the ‘your mug’ thing can reach new levels of obsession. You will know what I am talking about if you have accidently taken someone else mug or your own mug disappears. There are few things that are going to annoy you more than having to track down your mug before 9am. Having a more unusual or novelty mug is part way to the answer, this will never look like a mug that someone has left behind or just one of those mugs that exist in the meeting rooms in your office.
Novelty Mugs make great gifts for her, especially if the recipient is a work colleague as they are under £10. The Keep Calm and Carry On mug should bring out the Dunkirk spirit which can be quite useful in an office environment. Any reference to shoes or chocolate are also appreciated by Women as it is generally something we all have in common. With this in mind the Vimrod Joy and Love Mug is ideal as is the 'Anything is good if it's made of chocolate' Jo Brand quote.
A novelty mug gift for him could be the Steve Wozniak quote ‘Never trust a computer you can’t throw out of the window’. He doesn’t have to be a geek to appreciate that. Remember a plain boring mug is a wasted opportunity to put a smile on someone’s face.