Wav is a world in spanish. Wave is not... I asked my spanish teacher.
It should be "El juguete de polvo". (It, then translates to Powder Toy... very similar no?)
I speak spanish (main lang.), and I belive the more logical option is "El juguete de polvo".
Here is what Bing says it is:
the powder toy = el juguete en polvo
Am I correct?