I've had these charging pads before when I had a Samsung phone a few years back (and shortly returned the phone haha).
They were originally $35, but it's lowered to $20.
(White; Single) http://www.ikea.com/us/en/catalog/products/80308307/
(Wood; Single) http://www.ikea.com/us/en/catalog/products/80289790/
There are also cheaper ones that you can drill into your desk if you're into that. For $11.99
(White) http://www.ikea.com/us/en/catalog/products/90318023/
(Black) http://www.ikea.com/us/en/catalog/products/40360217/
They sell lamps with them built-in as well.
They were originally $35, but it's lowered to $20.
(White; Single) http://www.ikea.com/us/en/catalog/products/80308307/
(Wood; Single) http://www.ikea.com/us/en/catalog/products/80289790/
There are also cheaper ones that you can drill into your desk if you're into that. For $11.99
(White) http://www.ikea.com/us/en/catalog/products/90318023/
(Black) http://www.ikea.com/us/en/catalog/products/40360217/
They sell lamps with them built-in as well.