Gadget-Box is selling the T-Qualizer, a t-shirt with a sound sensitive graphic equalizer panel embedded into the cotton fabric. Simply make some noise and watch the green, yellow, and red lights respond. It only comes in one color (black) and three sizes (small, medium, and large). Gadget-Box is based out of England, but they ship globally at reasonable prices.Trend Hunter also highlights the t-shirt.
I think I would be tempted to get one if they were available in Canada.