Congratulations, you've made it to Puzzle 3! You must be doing something right... or wrong. Anyway, here's the answer: THE BALL (just kidding, it's actually just a ball).
But seriously, the answer is not just any ball. No, no. It's a very specific, very rare ball. A ball of Wooloomooloo, to be exact.
Don't worry, I'm sure you'll figure it out. I mean, you've already spent hours staring at the same wall, thinking about nothing. It's not like you have better things to do... like, say, work.
So, go ahead and read up on the Wooloomooloo Ball Theory to learn more about this mystical orb.
Or, if you're feeling really adventurous, you could always just make it all up as you go and call it a "Wooloomooloo-esque" solution.