Does anyone know where to get badminton goggles? online or in Canada??

SportChek and the other sports store chains sell them.
If you have money to burn or a good health benefits policy, you might be able to write off a pair of Oakley M Frames along with a transparent replaceable lens (that's what i have).

Black Knight is one of many brands that sell protective lenses. You also may want to check Moutain Equiment Coop (www.mec.ca).

Hope this helps

go to any store that sell squash equipment. or buy a safety glasses from home depot or rona