I use the Hely & Weber Modabber Wrist Orthosis ~$25USD

I only was diagnosed with CT in my right wrist, but when my left started having problems, I saved myself the cost of a 2nd visit to the doctor, and went straight to the pharmacy and got a left hand brace. I've been using both ever since.

I would recommend buying them in pairs (2 left, 2 right), that way when one pair gets a little funky, you can wash 'em, and have the dry ones ready to go. I think I've gotten about 6 years out of mine, but it's getting time to replace them (velcro's wearing out).

I'll say that when I was wearing the T-Scope leg brace after getting hit by a car in Oct 2007, combined with the CPAP, I felt a bit like the victim of a borg/alien facehugger encounter.