What you need is a $20.00 DMM, a $50.00 soldering iron, solder, wire, protoboards, wire stripper/cutters, tweezers.
And an internet-connected computer to order parts, look at datasheets, make schematics and boards.
Prediction:
Winner will include stuff like:
Bus Pirate
Arduino-anything
Open-source-anything
I'd be scouring Adafruit, Sparkfun, and Seedstudio for open source consumerish products.