This trigger point tutorial and the Trigger Point Therapy Workbook for chronic muscle pain, including RSI. Looks to me like a genuine case where mainstream medicine has not caught up with what alternative-ish therapies can explain and heal. This guy's site looks like an incredibly well-documented resource for all kinds of chronic pain.
Self massage is a great healing method.
Yoga for maintaining and improving range of motion.
I have often benefited from recommendations for Things I Didn't Know I Wanted.
Given that Less Wrong is a community of unusually intelligent, critical, and self-improvement-focused people, I suspect we can generate a pretty helpful thread of product recommendations — perhaps even a monthly thread of product recommendations.
Rules: