Such a product would be very big, and impractical, since although wireless charging is more convenient, it wastes more energy, which defeats the purpose for a powerbank, who’s purpose is to keep your devices charged.

If you really want this product, you could get Anker’s 25W 10,000mAh powerbank, the Anker 3 in 1 MagSafe cube, which is a tiny cube that charges an iPhone, Apple Watch and AirPods all wirelessly at the same time, and to power and charge both, an Anker Nano 3 47W power brick.

The above setup is the closest you can get to the product you described above, even though it’s three products, not one.