My idea was to list the items that are allowed by the Canadian Air Transport Security Authority, but it is a long way off. I will give you the outline, but if in doubt, I advise you to refer to the site of the agency. The list is very complete on the site.
Foods: Solid foods (e.g. chocolate, sandwich, fruit, vegetables) are permitted. All liquid foods (e.g. water, yoghurt, pudding, jams) must be included in the liquid bag (see above)
Prescription drugs are permitted and excluded from restrictions on liquids
Camera and video devices are allowed