I won! Answered
Huzzah! I won the prize in the Google Ponoko Challenge. My Instructable about making and printing a Menger sponge took the top prize. Now I'll have a professional version of SketchUp, a year of Ponoko Prime, and over $500 worth of Ponoko credit.
Now, the big question: what should I make? I have a couple of ideas for jewelry for my wife and a toy for my son, but that's not even $100. Anyone have any suggestions?
UPDATE: 3D printing gets expensive quickly the bigger it gets. Exponentially, even. Something that fits in the palm of your hand would be ideal.
This Menger sponge is 1.4" on a side and cost $26 to print (not including taxes and shipping). A 2" cube would cost $77 and a 4" cube would cost $446. And that's the cheapest material to choose from. If it was printed in stainless steel it would cost $195, $650, and $4,013 for the same sizes.
Announcing the Google + Ponoko Challenge Winner