Yes, you could simply add the charging coils and circuit board that go inside of a wireless charging pad. The coils would just need to fit in between the holder and whatever device you have in it. then you can mount the circuit boards to the back side of the holder.

That is assuming the device you want to charge already has a built-in wireless charging feature.

You can also get smaller wireless charging coils/boards and some even come with the wireless charging receiver coil. But the smaller/thinner coils are usually only 5V at 1A so they would not support fast charging or may not charge some larger devices faster than they will use up the battery.