I have never really heard of a stationery box before, but whilst investigating some rather posh pens, I came across this Secretaire box from Smythson.

The box is made of leather, is lockable and comes with it's own rather fancy stationery, but I'm not sure that justifies the £5,145 price tag! I'm completely in love with all the little drawers, but really, I'd rather just get a pen pot, I think.