I pay $20 annually for 80 gigs of cloud storage. My favorite photos are already there and a lot of family photos going back 100 hundred years are now scanned and in the cloud.

Cloud storage is getting cheaper all the time.

Ditto Ian on the Apple Time Machine - my external hard drives are diminutive and I keep them in a briefcase when not hooked to my laptop.

A trusted family member at another location could also be a wise backup plan. Put everything digital you value on an external hard drive and ask them to keep it tucked away somewhere. You could probably password protect it.