5. Keep the change
加拿大:硬幣留著容易花著難
In Canada, Currency Act of 1985 prohibits consumers from using unreasonable amounts of coins to pay for purchases. This means you can’t pay for an item in all coins (especially if it’s over $10). Even the use of dollar-coins is limited. The shop owner has the right to choose whether or not he wants to take your coins but doesn’t have to.