A mouse that can eliminate RSI? We'll believe it when we see (and try) it, but here's one to make that claim.
According to Electronista, the Hela Glider Mouse supposedly staves off repetitive stress injury by behaving "somewhat like an air hockey paddle," avoiding muscle strain resulting from constant reaching to the side. The buttons and scroll wheel have been taken out of the mouse itself and embedded in its pad, which will undoubtedly be an adjustment for many people. But if it can avoid permanent crippling, as we have witnessed too many times, it may be worth at least a try for RSI sufferers--even at $380.