I had a family member in a truly messed up financial condition that resulted in me sending them $1000 in prepaid Visa cards.

Those were sent USPS priority, and I can surely tell you there was mild panic when they didn’t show up on time. I was concerned someone saw the contents on X-ray and decided they had nothing to lose by letting that envelope, um, slip through the cracks.

They eventually arrived, but it was a worrisome couple days.