If you're a Toronto-area bike mechanic with time on your hands, you might like to check out this posting on the Green Jobs website.
Charlie's Bike Shop, which runs the Charlie's Freewheels program that allows young people to experience how to rebuild a bicycle and provides free bikes to kids in Toronto's Regent Park, is looking for someone or some people to helm two one-week stints of leading 10 young people (aged 13-16) in the stripping and assembly of a bicycle. The first stint starts next week, so move fast if you are interested.
Even if you can't volunteer, you might linger a while on the Charlies' Bike Shop site and read about Charlie Princep, the young cross-Canada cyclist who was killed in 2008 after being overtaken by a driver in Alberta, and who provided the inspiration for both the shop and the program. Princep's blog, Double Cross (a reference to his ride back and forth across the continent in 2007) is still accessible.