Need some extra cash? Check out the City of Calgary's Online Hiring Fair: http://www.nextsteps.ca/yec/events.html.
There are hundreds of jobs listed, so you're sure to find something that suits you. Jobs are for ages 15 - 24, and each one has a FAQ about the company you'd be working for.
Jobs include: nannies, retail, program coordinator for a theatre company, and lifeguards (hopefully you won't ignore the kids like the girl in the picture).