If you only have a small amount of data to backup, Google Drive is actually quite a decent alternative, but you will need to install a few tools to you VPS.
With the tool rclone (rsync for cloud), you can upload your files to Google Drive, Amazon S3, Dropbox and a few more. The procedure is almost the same no matter of the cloud provider you go for.
Just goto: http://rclone.org/
Install rclone as described and then setup a cronjob to sync the files that you want to Backup.
My crontab to backup the automysqlbackup folders:
# m h dom mon dow command 0 * * * * export PATH=$PATH:/home/siho/bin && rclone -q sync /var/lib/automysqlbackup/ remote:Backup/automysqlbackup