I have to keep this in mind for the future. I've been using Localsend which is as fool-proof you can get, and it also runs on pretty much everything (fairly current). I use it to transfer files from phones and tablets to my computers and vice versa, and it's a handy way to share shit when someone comes around as there's no configuration to be done, just press send and receive.

Not the most featureful piece of software, but I like the simplicity.

 

@Will Kweks Warpinator does exactly the same thing, except this application is built into Linux Mint, I don't have to install anything

 

More than that, I suggest in Options-General to enable folder context menu, for some reason it's not factory enabled.