Mini-ITX Motherboards and computers

DynaVibe propeller balancer.

Mp3Car

HubData911

Hub Mobile Computer Systems

Adafruit Industries

Aplex Industrial Panel Computer Company

Earth LCD Displays

National Instruments  (usb-6009 A/D module)

Super Bright LED's

Byonics APRS Tracking Systems.

Fusion Brain USB I/O board and MDX software

U-Nick's Cheap Noise Canceling Ear Bud DIY headset

Digikey (Hall effect gear tooth sensor  #CH416-ND)

Dimension Engineering  (sensors)

Freescale Semiconductor, Inc.   (sensors)

Mouser Electronics

Newark Electronics

All Electronics

Quickar Electronic kits, LEDs

Superbright LEDs