NACLO is the North American Computational Linguistics Olympiad, and this organization runs an annual contest that offers an opportunity for you to challenge your logical and critical thinking skills, and no particular knowledge of linguistics (or a second language) is required. A sample of the sorts of questions you might see can be found here. Try them, they’re fun!
This year the Canadian Linguistics Organization (OLCLO) will become an independent organization, and will be running the contest on January 25th.
If you’re interested in participating, or learning more about the contest, talk to Irene, Henry, or Yuheng (members of the Linguistics Club) for more information.