Only for goods traded with the USA. As noted by the PM's brief you'll see Canada is accelerating trade with other international partners, as it should. Yes, this will affect Canadians, but not as much as Americans.

Hopefully it's not a barrel re-imported back into Canada after being manufactured in the US using tariffed Canadian lumber. Those could get pricey.

Well those barrels are being used for oil, and have you seen the cost of oil? You may be more suited to a cardboard box. Less protection from the elements, but you can move much easier.