From Air Canada's website.
aircanada.com - Carry-On Baggage
Accepted items
Accepted items include:
Certain electronic devices which are permitted on board with restricted use, such as:
Personal entertainment devices (MP3, iPods, portable games, radio receivers, video cameras)
Satellite receivers (e.g. hand-held global positioning systems)
Calculators (without printers)
Laptops. The cord mouse and the Memory Stick are the only peripheral devices permitted during flight. Laptops cannot be stowed in seat back pockets, as these are not designed to sustain the weight of a laptop and may be damaged over time.
Electric shavers
Pagers (receiving type only)
Noise busters (electronic noise cancelling devices)
Wireless handheld devices (Blackberry phones, cellphones, including cellphones with MP3 player or build-in camera, PDAs, etc.)
Passengers may be asked to turn on their electronic device at the security check. Please also view a list of prohibited electronic devices in the 'Prohibited Items' section above.
One book of matches per passenger
Butane (Bic-type) lighters.
Departures from the U.S.: Bic-type lighters are the only lighters accepted past US pre-clearance checkpoints
Ice skates, skateboards
Game darts measuring 6 cm (2.4 in) or less
Toy guns which do not look like real weapons
Plastic knitting needles with rounded tips (except for itineraries that include the UK)
Sharp-tipped scissors with blades measuring 6 cm (2.4 in) or less, and all round-tipped scissors
Small tools with a head and shaft measuring 6 cm (2.4 in) or less
Tools of any size required by special needs passengers travelling with a mobility aid
Restraining devices such as handcuffs or flex-cuffs
Electronic cigarettes (or 'e-cigarettes'), provided they remain stowed and unused in your carry-on baggage.