This is the third installment of the Saturday Sourcebook.  For those of you who aren't familiar with this weekly post, you can check out the backstory on it here and here.  If you already familiar with the Saturday Sourcebook, or if your don't give a crap about the backstory, here are the links from this week:

Combining Alternatives:
Fast Company:  How MIT's Hybrid Bike Wheel Came To Life

Reducing Transaction Costs:
VentureBeat: Make your own gadget with Ponoko and SparkFun

International Markets / Constraint Innovation:
Springwise:  Open source phone service for off-grid areas

Biomimicry:
PSFK: Could Bedbugs Actually Be Useful?

Complementary Products:
Springwise:  Tesco tests out drive-through delivery

Product Design / Waste:
CoolHunting: A+: The Young Designer's Platform

Exploiting Technology:
NYTimes:  New Uses for an Old Plug

Projection:
Springwise: Incubator for socially focused ideas

Support Systems:
ReadWriteWeb:  Re-Imagining the Interface of Mobile Augmented Reality

Waste:
PSFK: Recycled Rubber Sink