Share Your Shipping Secrets/Tricks Here

I overpack things, but have only gotten burned once, but UPS covered the cost. They destroyed the box that I packed a Dana 60 Sure Grip with ring and pinion in. When the guy got it, they had written "box damaged. Please let us know if you would like to return to sender". But I retain the bubble wrap and other packing I get in boxes and re-use them when I send parts. I typically quote a little larger box and weight than what the part is to allow me to pack lots of stuff around the actual part.