Recommended – The Synesthesia Battery from the laboratory of Dr David Eagleman at Baylor College of Medicine. http://www.synesthete.org/ (you will need to set aside a bit of time for this, and it only identifies some types of synaesthesia)
A Spanish synaesthesia test? http://www.artecitta.es/ARTECITTA/sinestesia/test/index.html
A screensaver which causes motion to sound synesthesia in some people, from New Scientist magazine’s YouTube channel http://www.youtube.com/watch?v=hLhuRIeHj6Q
Revised Test of Genuineness (TOG-R) – 2006 journal paper about it http://www.autismresearchcentre.com/docs/papers/2006_Asher.pdf http://www.cortexjournal.net/article/S0010-9452(08)70337-X/abstract
A synaesthesia screening questionnaire used by researchers at the University of Cambridge https://docs.google.com/spreadsheet/viewform?formkey=dDFwb0tWem5kYW9IOHE2RXMzNXpvV1E6MQ#gid=0
Am I a super-recognizer? 