Quote Originally Posted by Loony BoB View Post
Without the power to survive an impact while traveling at mach one, let alone the power to fly, I would say there is exactly no purpose whatsoever given that you couldn't control it in any way whatsoever.

Jiro, you have to come up with another seemingly useless power! And I just realised that it's power, not device, so my one was rather pointless. Oops. I'll come up with another one, then: The ability to grow your hair exactly 25% faster than normal.
Assuming you change this to a rate that is actually superhuman (25% faster than average/median growth rates is within human parameters, and therefore not superhuman. Powers that regular humans can possess are by definition not superpowers, just powers), rapid hair growth could earn you some extra money, as you could sell it to people who make hair extensions out of real hair.