1. Several of these web links are extremely extensive.
Rube Goldberg
Several of these web links are extremely extensive.
I don’t expect anything as extravagant as the Rube Goldberg #PS3 or Rubeception - First Rube Goldberg that builds itself!
However it might help generate idea and get excited about the engineering challenge aspect of the assignment.

2. Sesame Street: Rube Goldberg Machines. 14 minutes https://www. youtube
  Sesame Street: Rube Goldberg Machines! 14 minutes   Small Rube Goldberg Machines   Rube Goldberg #24 - How to Turn on a PS3 Rubeception - First Rube Goldberg that builds itself! How to Make a Rube Goldberg Machine (Read Description)