• Adafruit Industries
• SparkFun
• Digi-Key
• Mouser
• Newark
• Jameco
• Goldmine Electronics
• All Electronics Corp.
• The LED Shoppe
• MPJA Inc.
• GoodFET Boards
• Parallax
• TNC Scooters
• nkcelectronics
• Seeedstudio
• Futurelec
• BG Micro
• HobbyKing RC Planes & More
• solderparty sweden

• http://www.arrickrobotics.com/surplus.html
• http://www.repairfaq.org/ELE/F_surplus_us.html
• http://amasci.com/supliers.html
• http://mightyohm.com/wiki/resources:surplus
• http://amasci.com/supliers.html
• http://www.industrialelectronics.biz/ ← West Allis, WI

• Harbor Freight
• MSC Direct
• American Science & Surplus
• McMaster Carr

• American Acrylics
• Bliffert Lumber
• Midland Plastics
• Kettle Moraine Hardwoods, Racine
• Inventables
• Magnets
• Harrison Metals, 1005 Perkins Ave, Waukesha, WI 53186

• StickerGuy.Com
• Engraving/Laser Cutter Parts
• United Nuclear
• Waukesha County Tech College Surplus Auctions
• City and State Government Auctions
• Arduino
• Monoprice
• http://pcbshopper.com/ Custom PCBs: compare quotes from 23 manufacturers

• RGB LEDs
• Battery Holder
• Battery
• Pins/Backs

(See Also, this list that Royce made: http://mkebots.org/?q=node/41 )