Theremin Kit

http://www.harrisoninstruments.com/101/101_description.html

Electronics parts vendor

http://robotstorehk.com/
This store sells electronics parts, mechanical parts and sensors. Usually deliver within 3 days.

LED matrix control

http://blog.arduino.cn/

Sound recording chips

http://hongkong01.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=2521105

Sound recording chips (Winbond ISD 1210P)

Connect arduino with processing using Firmata

http://www.arduino.cc/playground/Interfacing/Processing

Resources for your final project

Tech links
Sound Activated relay (Sound VOX), [Kit 126 pdf]
Digital Counter, [Kit 1 pdf]
Music volume meter/ VU meter [Kit 89 pdf]
Rain detector [link]
Sound recording + playback chip [link pdf]
ArduinoBoardLilyPad [link purchasing]
Conductive thread (for electronics fashion project) [link]
Generating words/pattern in CRT monitor using Arduino [link]
Transistor as relay [link ]
製冷片 ([新昌], 地點 : (C)鴨寮街246號舖, 適用貨品 : 二手電腦配件, 各類電腦插頭, 少量電容及磁環等.)


Art work links
Digital mirror (Danny Rozin [link], Jim Campbell [link])