Hot/cold rice bags.

I used this tutorial loosesly.  The main reason for posting this is the one major change I made.  Having arm/wrist issues myself, I made one the general size and shape of a keyboard wrist rest for my carpal tunnel inflicted father.  I personally get a lot of relief from heat and often rest my hands on a heat bag while working/typing.  If you know someone with hand/wrist issues that benefit from heat or cold try making one for them to use when they are on the computer!