the worst for me was when FedEx "lost" one of my packages (lost, my eye, how does a box get lost? it got stolen is what happened). It had a tracking number and got stuck at Mississauga and never advanced from there. And when it came time to filing a claim, they only paid $100 Canadian (maximum allowable), even though it was paid in US funds and cost more than $150.

I recently sent a Starbucks gift card to my friend via Canada Post, and fearing that employees can feel a card and be tempted, I put in a very stiff cardboard so you couldn't feel anything inside. She got the card.