I propose a new challenge. Solve each level through brute force. Forget clever contraptions that take precise timing or parts to complete. Forget restrictions on what you can and can't use. Solve each level by creating a contraption that either removes obstacles in your path or powers over, under or through them. All parts used (with the exception of the red piece) must be attached to the contraption.
Here's some of my solutions:
Rolling Away - http://FantasticContraption.com/?designId=609737
Reach Up - http://FantasticContraption.com/?designId=609792
Mind the Gap - http://FantasticContraption.com/?designId=609870
Junkyard - http://FantasticContraption.com/?designId=609293
The Wall - http://FantasticContraption.com/?designId=609946
On A Roll - http://FantasticContraption.com/?designId=610070
Full-up - http://FantasticContraption.com/?designId=610164
Higher - http://FantasticContraption.com/?designId=610217
Around the Bend - http://FantasticContraption.com/?designId=610299
Up The Hump - http://FantasticContraption.com/?designId=610356 (there's a recurring theme here
)Mission To Mars - http://FantasticContraption.com/?designId=610531
Up The Stairs - http://FantasticContraption.com/?designId=610783
Big Ball - http://FantasticContraption.com/?designId=610942
Four Balls - http://FantasticContraption.com/?designId=611514
Awash - http://FantasticContraption.com/?designId=612594