If, like me you have cold hands then a heated mouse mat is essential. Before I bought this I had two options - either wear thin arthritis gloves or heat the room to a silly temperature.
Anyway, this popped up on Facebook with an Amazon link, so I bought one. This now makes coding even more of a pleasure as not only are my hands warm, the heat also rises onto my face and head so it's bye-bye cold.
It's not a substitute for a two week holiday in the Caribbean, but possibly the next best thing.
Here's a Amazon Link, if it fails, just search for Heated Mouse Mat.
Why didn't I think of this a few years ago?