Although mail is a very important way of communication and a practical way to send packages and even letters (yes, there are some classic people who like sending letters yet). But imagination and weirdness do not have limits, therefore there are some “items” that have been sent through mail that are not quite common.
 
1. Babies
The system of postal parcels in the United States began in 1913, and almost immediately people began to test the limits of the “packages” that could be sent.
In mid-January of that year, Mr. and Mrs. Jesse Beaugé from Ohio realised that it would be cheaper to send their son to visit his grandmother through postal packages than to buy a standard train ticket. They paid 15 cents on stamps, and “insured” the baby for $ 50.
The Postmaster quickly banned the practise, but people were still following the rules, including sending a 14-pound baby to their grandmother’s.
2. Slaves sent by mail
It can be the most ingenious escape from slavery. Henry Brown had a “heavenly vision” to mail himself to a place where there were no slaves. On March 29, 1849 Brown put himself into a wooden box (with the help of a shopkeeper friend), and the 200-pound box was sent to the Philadelphia home of abolitionist James Miller McKim 27 hours later.
His escape became quite popular and it prompted the Fugitive Slave Law to be approved in 1850. Some, including Fredrick Douglass, wished he had kept his mouth shut about it, so that others would use a similar method.
3. A living cat
In New York City, from 1897 to 1953, the mail used to be sent through a complex series of pneumatic tubes, beating couriers full of mail at 35 mph to their various destinations. For the inaugural event, the General Post Office sent a Bible, a large fake peach, and, for unknown reasons, a living cat. According to one of the attendees, who wrote about the incident in 1931, the cat seemed dazed, but unharmed.
4. Thousands of creepy letters
There is nothing strange, of course, about sending a letter through the mail, but thousands of them sent anonymously to a small town?
That’s what happened in Circleville, OH (population 13,000) in 1976. Residents from all walks of life began to receive these strangers, missives in capital letters written accusing them of various crimes. It is believed that the receiver, Ron Gillespie, received a phone call from the writer and went to confront him; Gillespie was driving on the road and was found dead nearby with his gun and a shot. A man named Paul Freshour was thought to be the murderer and was put behind bars for attempted murder; he denied both accusations. Even when he was in prison, the letters kept coming until the 1990s and then stopped abruptly.
5. A building by mail
In 1916, William H. Coltharp was going to build a brick bench in Vernal, Utah. The bricks he wanted were 127 miles away, in Salt Lake City, and he was trying to figure out how was the best way to send them 80,000 bricks. And it was through the US mail service.
He was delivered boxes packed under the limit of 50 pounds, 40 at that time, for a total of 40 tons. The Utah Post Office was overwhelmed, but, effectively, delivered the entire “building”. However, it caused the postmaster to limit the weight for one person to send up to 200 pounds per day.
“It is not the intention of the United States Postal Service that the buildings would be sent via mail.”
6. Sending bricks as a form of protest
Speaking of bricks, the practise of sending to banks or unwanted advertisements was a concept / joke invented by radical Abbie Hoffman, who came up with the idea in his volume Steal This Book during the 1970s.
At that time, the “guaranteed delivery” will require return envelopes and postcards sent by the credit card companies and others to be delivered, regardless of what was tied to it with the delivery paid by the issuer (which can be quite expensive with a heavy brick).
Since that time, the laws have been changed so these labels cannot be “misused.”
7. A ski, a hammer and an oily fish box as part of an “experiment”
Despite all these rules, the Post Office remains reasonably tolerant when it comes to sending strange items in the mail. A group of prankster scientists from the magazine Improbable Research set out to test these limits in 2000, with a postal experiment. They sent a variety of different items classified as valuable, sentimental, unwieldy, meaningless, suspicious, and disgusting to see which ones would be delivered at the end. These include a ski slope, a human tooth, a helium balloon, rotten fish in a box, and a fresh coconut. 18 out of 28 of these items were actually delivered to the recipient
8. The “smallest postal service in the world”
A company called Leafcutter, called the “World’s Smallest Postal Service,” writes letters by hand using small caps, packages and invitations are equally small and they are delivered through regular mail.

For a price, you can write a personal letter or choose a small object (if it is a package) and it will be written, decorated, and sent anywhere in the world.
9. A 350,000 dollars drone
A university student ordered a weight bench, but when the package arrived through UPS, there was an additional box, also addressed to him. Thinking it was part of the unit he ordered, he opened the box, only to discover what appeared to be a drone.
It turns out that the unmanned aircraft was non-military and used by the National Oceanic and Atmospheric Administration. It is not known who sent him the drone.
10. Birds, chickens, scorpions
No, you cannot send cats, bricks or children through the mail anymore, but there are still some living animals that are in fact legal and deliverable. These include bees, scorpions, chickens, smaller animals 20 inches, and fish. At least in some countries.