I use a laptop for the majority of my theological research, and I’ve intermittently encountered symptoms of carpal tunnel. I’ve made two useful additions that minimized this at my main study: an external keyboard and a second monitor. [Update in May 2014: How I Set Up My Desks: One for Sitting, One for Walking.] I recently made a third addition that has virtually eliminated the problem: the IMAK SmartGlove. (I wear size medium. It’s also available in sizes large and small.)
I became aware of this product in May at The Gospel Coalition’s pastor’s colloquium. The man hired to transcribe the proceedings used his laptop and an IMAK SmartGlove on each hand. He highly recommended them to me when I asked about them. I now regularly and gratefully use them myself and am happy to commend them.