Popping bubblewrap makes my Aussie dog go into a frenzy...not sure why, but it's damn funny. She'll rip it out of my hands if I don't stop. She also loves chasing and popping soap bubbles.
Isn't that just what all the tutorials say - find something to give away. Doesn't have to be "quality" just entertaining for a short while so people will link to it. This is, infact, a classic example.