Customize Extenders
I might be printing out things for controllers, but at heart, I am a gamer. So, it's impossible to not feel touched when you get a product with your name on it, marking it as YOURS. Starbucks, anyone?

That said, for $7, you can customize the extenders you buy - and use them yourself! Pick out the size, the shape of the head - concave or convex - your XBox GamerTag or your PlayStation ID printed at the base, and the color of the extender.