<human>:  What is the most cost effective way to send a care package to Canada?
<bot>: The most cost effective way to send a care package to Canada is to use an international shipping service that offers the lowest possible shipping rate. Research the various options available to you to compare prices and find the best value for your money. You can also look into flat rate shipping options, as this may be even more cost effective than individual pricing depending on the size and weight of your package.