A magic-wormhole!

Have you ever struggled to get a file from one computer to another? 

What if the file surpasses the size limits of Google Drive or Dropbox?

Yes, you can SSH/SCP, FTP, HTTP, USB, script the hell out of it but isn't there something that allows us to transfer large files easily? And is "securely" too much to ask too?

https://github.com/warner/magic-wormhole

TL;DR, The concept is; you and your recipient would have another secure means to transfer a secure pass-phrase.  The sender would tell the receiver what pass-phrase accesses the package.  The odds somebody else entering the same phrase into the wormhole at the right time is approximately 3720 to 1! (I don't know the exact math but its really hard to MitM) 

"The package is at whisky-tango-foxtrot."

Here's the -help,

 Magic Wormhole supports multiple modes;

#Wormhole send                    # Activates prompt for a message to send, Text messaging
#Wormhole send <file>         # This allows secure transfer of files
(The 'ssh' mode is pretty legit too, supports transfer of keys)

On the reception side the command is usually the following;

#Wormhole receive <PASS PHRASE GIVEN TO YOU>

You'll see it gives you a prompt letting you know its a "file" incoming and whether to accept it or not.  I like how simple the commands are and the progress bar is a nice touch especially on larger files.

Maybe you don't have this issue but I like the tool so much I had to share.

Thanks to @lotharrr
https://github.com/warner/magic-wormhole
https://magic-wormhole.readthedocs.io/en/latest/