Whether you're in grade school, university, or working a job, almost everyone has had the experience of being assigned to work in a group. And as those of us in Mad Scientist University (or was that House Bonisagus?) know after looking out at the vast majority of the populace that surrounds us... people are incompetent.
Sadly, it happens inside the hallowed halls of Mad Scientist University as well. How would you, assuming you have marbles, cattle, plastic springs (not going to use the commonly-referred to name, I've already been tortured with Sporks because of it... damn, did it again), oranges, and peat moss, get your 'teammates' to finish the project rather than screwing around?
Your project is due by February the 6th. Take no prisoners.