Can I register official Nintendo controllers/accessories on Club Nintendo?

Club nintendo's site says you can register game PINs and system serial numbers. Can official Nintendo controllers be registered for points as well or is it just consoles/games? I tried a number on my Wii U Pro controller but I have no idea if I picked the wrong number to input or if it's just not valid at all.


Solution 1:

It is games and consoles only.

Here is the list of eligible products: https://club.nintendo.com/eligible-products.do