while stationed overseas... I sent home a 12pack of various belgian/dutch/german beers every month. All I used was a cardboard box and a ton of newspaper, all through the USPS. when I got home 2 yrs later, I found one box wrapped in cling wrap due to it got dropped and broke one bottle, all the liquid soaked into the newspaper, but I thought, that package must have been dropped hard cause I used ALOT of newspaper. these days, I would say do the same thing except wrap each bottle/can in bubblewrap first then either more bubblewrap or newspaper.