It’s difficult to get a good 18 holes of golf in during the winter in Canada. Take advantage of this by involving your school in constructing an 18-hole miniature golf course within your school. This can make use of the physical intricacies of your school inside and out with one group or class responsible for designing each hole of the course. A school-wide competition is then conducted on the course.
This can run as an intramural activity at lunch with the front nine being completed one week and the back nine being completed the next, or you could construct all 18 holes in a double gym and have the students pay to play the course. Prizes and recognition can be given for the best scores and for the most imaginative or challenging single hole designs.