(Yao)
Color-scheme generator with vision-type selector:
http://wellstyled.com/tools/colorscheme2/index-en.html

(Max, Luke)
Andrew Bucksbarg:
http://www.organicode.net/work.html

(Jieun)
Drum trigger/velocity sensor/contact mic:
http://www.amazon.com/Pintech-Acoustic-Drum-Trigger-Trap/dp/B0002F74AM

(Pete)
ear-training site:

http://www.good-ear.com/