Actually, yes. Shortly after parcel post was introduced in the early 1900s, several parents sent their small children though the mail. This was done with the help of sympathetic postal workers, most commonly over short distances in rural areas. And it was cost effective—in 1913, it cost just 15 cents to mail an 8-month-old baby to his grandmother.

Before you get any big ideas, though, know that the fun came to an end in 1920 when the postmaster general officially outlawed sending people through the mail. How lame.