There’s a case from long ago—in the US —where someone mailed a tooth in a transparent box. That wasn’t allowed. The postal service placed it in a larger opaque package and added a note: We do not permit the mailing of human remains. Thank you.
Remains weren’t allowed. But whole humans were. Babies and small children under a certain weight were sent through the mail, traveling across the country like packages. Once, even an adult man did the same. On the plantation where he was enslaved, he climbed into a crate marked dry goods and mailed himself away.
A variation of The Parcel Project, in which Johannes Bellinkx and Daan Brinkmann sent a package containing a spinning camera that recorded its entire journey, can be seen on August 29 and 30 during the anniversary festival of Podium Hoge Woerd in Leidsche Rijn.