Basically, it just needed to be made. Rubber ducks are awesome, and found it fitting that they got some appreciation. I don’t need to say why they’re awesome, as it should be logical for everyone. I mean, just look at them!
Sadly, I don’t have a bathtub (yet), and thus no rubber duck (they’re not really that smart or useful in a shower) – but at the point into the future where I will have that, there should instantly be a rubber duck to go with it. Unless there, by that time, is a rubber gnu available, which would naturally be one million times more awesome.