Careful with UPS
I have sent stuff to Canadian friends before and every single, solitary time, it was FUBAR.
UPS in Canada have their heads up their ass so far, they'll never see the sun again was the way one guy put it.
There is a major problem with value declaration as well, nobody in the US well tell you this or even admit to it, but if you declare the value over $20 (at least it was $20 the last time), they have to pay a penalty import fee of something like 9000%.
In short, shipping to Canada from the US is something you both have to coordinate very very carefully or they will end up getting screwed and having to pay for it.
The boxes also arrived looking like gorillas had used them for stomping practice, so best wrap as if it were finest crystal - if the goons can break it, they will.