I've finally got round to acquiring a mobile phone with wireless charging capability. That got me thinking about the possibility of a retrofit; not an easy thing to do neatly in the B8/B8.5. Then I found this in the USA; a bit pricey but I found a discount code to get 5% off. I've just ordered it; all in, it's come to just under £74. I'm sure it'll take a while to make from the USA, but once it's here, I'll post an update.