One thing I could do after I get a car is offer English tutoring - with the option, if they like, of going to their houses or other places that are convenient to where they live. I've noticed that a suprising lot of foreign students don't live on the Halifax peninsula.
Of course, I know from experience that the whole "native speaker" thing is overrated, and I'd really have to get my crap together and probably get materials galore. I think I have a friend or two that's done this. I'll call them up and see what they have to say. There might not even be a market for English tutors anymore. I suppose I could also offer to help people with their writing assignments!! < poor style