Spittoon

I find it odd that spitoons are no longer common place as, especially during the colder months, they would be almost as useful as Douglas Addams's towel.

While they could still be used for chewing tobacco, I think having one in ones own room/cubicle, with a disposeable, anti-bacterial liner on the inside of the neck, would be useful for getting rid of loogies without wasting tissues or time wandering to the bathroom. And the pleasant "ting" would be a bonus as well. While you're at it, the anti-bacterial lining makes this useful for all other garbage of questionable sanitary status.

They could also be made smaller, a version 4-5inches tall could easily fit into my coat pockets. A great gift for the chronically-congested-on-the-go businessperson in your life.