Do you have a green thumb, Muddy? I don't know who supplies the Canadian medical marijuana program, but if you could become part of that process I feel comfortable saying that it will probably pay better than anything else you could find that doesn't require a graduate or first professional degree. I'll break it down for you in U.S. Dollars:
Wholesale price of well-grown pot: $2,250/lb (you can inflate this by growing rare strains or having a reputation for dense buds)
Price of operating a 1000W grow light: $200/month
Yield per light: 1.5lbs/100 days
Now obviously you've got fertilizer costs and pesticides/fungicides as well as fresh ventilation filters so you don't make your neighborhood reek like the jungles of Myanmar, but there's a pretty obvious profit margin even after all that. Even if you don't sell it to medical patients, guys on the street would happily take it off your hands. Let me know if you need help getting started, I can point you toward a few books and hook you up with some equipment dealers.