Mine features an idea I was kicking around at the time I was in NYC (no, I'm not a New Yorker). I am intrigued by a crowdsourced solution by which everyone, in the action of possessing money, would be able to participate in creating a money system that would be more accessible to visually impaired people. It only has 1 rule. Clip the corners of your paper bills in correspondence with the unit of currency. Watch...
Beau Trincia from Spark in 60 by IDSA NYC on Vimeo.