Get another similar or larger drive, copy this one to it, and take one of them to someplace with low risk of fire, storm or theft ...
Second-best is to sign up for a web-hosting account and put the files there -- I don't think it costs more than backup services and you might get a free domain on top of it, though you're not forced to host a web site.
I have an inherent distrust of backup "services" since they are only "safe" as long as they decide to stay in business at a price you're willing to pay and avoid becoming a hacking target victim ... |