When our sons were in the military, traveling all over the world, I regularly sent them cookies, etc.
I usually placed each cookie, brownie, whatever in a sandwich bag, then layered the individually bagged treats in a box, with a layer of bubble wrap between the layers.
After the box was full, I put a final layer of bubble wrap on top and closed the box. I then put that box into another box that had plain popped corn, styrofoam peanuts or more bubble wrap all around. Sealed and mailed. They never received a broken cookie or other treat.
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!