Found this on transcrpitiongear.com (I have ordered equipment from them before and been happy with all purchases) and was wondering if it worked well but no reviews on it yet. The descriptions says:
"ergoBeads™ are like no other wrist rests or stress balls. Ergonomically designed by an orthopedic surgeon, ergoBeads™ provide optimal comfort for your wrists and hands. Made of cotton Lycra, they are soft and cool against your skin. The smooth plastic bead filling gently sup ...