Amazon is currently selling Anker's popular PowerPort Wireless chargers right now for $12.99 for the 5W model and $16.99 for the 10W model. Of course, these are with the promo codes ANKER258 and ANKER253 respectively. This takes a few bucks off of the price of either wireless charger, and makes them a pretty good deal, especially if you own a device that can do wireless charging.
The Anker PowerPort Wireless 5 & 10 are essentially the same wireless chargers, but one does 5W and the other does 10W. 5W is the standard output for wireless chargers and it'll work with any device that can do Qi Wireless Charging. However, the 10W model is made for Samsung's fast wireless charging. So if you own the Galaxy S8, Galaxy S9, Galaxy Note 8 or any other recent Samsung flagship device, it's worth grabbing this one for a few bucks more. These are charging pads from Anker, which are pretty plain looking and work well. There are LED lights around them, which allows you to go ahead and see when the device is charging, as well as knowing when the device is fully charged. Since this is a charging pad, it is common that the phone could slip off of it, so the LED lights do come in handy, and are not flashy either.
This item is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap (usually $3.99) next-day shipping if you need it extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime. You'll get 30 days free (if you're a student, you get 6 months), and then it's $99/year (or $49/year for students). Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.