If one has access to a good internet connection, even if only once a week, Dropbox is a brilliant solution, and the Basic version is free too up to 2GB.
It also backs up and synchronises all files in your local Dropbox folder on any computer, automatically, seamlessly and hassle-free.
You can even access previous versions of a file.
You can even escape a ransomware event by asking Dropbox to roll back an adverse event across tens of thousands of files in one go.
As for Google Drive, teachers are given 10TB free each, via their employer's free Google Education membership.
Frankly I'm surprised that this is not the very first thing taught and implemented at university.