Ive seen mention for pedal & power and something from motorola, but I
cant find anywhere to purchase such things. I want to trickle
feed/charge my mobile from the hub dynamo when touring. Surely such a
thing exists and works? Most links I find are dead ends or defunct
companies.

Anyone got anything concrete that they have used and can recommend?

I mean, if I can recharge my mobile from a USB port I surely can from a
hub dynamo?