I'd say calling it a competition is putting a little too much weight into it. I view this more as a bunch of guys out golfing with a cooler of beer

Here's two great electronic retailers, I prefer searching through digikey's selection though.
http://digikey.com/
http://mouser.com/

As for components necessary, it really depends on the PCB you have. With mine, the EVGA, I ordered two 100k 25 turn pots and a slew of 2200uF 16v 0.015 Ohm ESR capacitors but I might have found some 0.01 Ohm ESR caps. Once I finish up the caps I'm going to see if another choke would be helpful but I don't think we'll be seeing current limitations.