Because of Safe Internet Day 2016 it's possible to get an additional 2GB on Google Drive for free. Google hands out the free storage to everyone who completes their Security Checkup.
By checking some information and answering some questions the 2GB is earned in less than a minute. Google not only asks you to review the devices that are connected to the account, but also to check the data you've filled in to recover your account.
It's unknown how long the current campaign ends, last year it lasted a week. To get the free storage, go here.