What a great idea.
I am quite careful about backups because I use my laptop for work and if something goes wrong with it then I stop earning, or at least I mess about the people I work for.
So we have two laptops the same, one for me and one for my wife. If mine goes wrong I figured I can pop the hard disk from mine, plug it into hers and I'm away (okay, she's one laptop short but we're good at sharing).
But what if my hard disk is the thing that dies? I can go to my backups and restore on a new disk but I just know there will be some files somewhere that missed the backup, probably some vital system setting that I'll spend precious hours sorting out.
Enter Clonezilla. This will clone your disk onto a spare one. Everything. You do need to have a spare disk (at $NZ100-ish that's easy) some way to connect to the laptop (USB drive).
Then you burn the Clonezilla software to a CD and boot from that, follow the instructions and it will clone your old disk to your new disk. For me the process took about 1.5 hours and I tested it by booting off the new disk. Everything was there.
I plan to redo this about every six months.
So if I lose my hard drive I can boot the clone, restore my backups to it, and I'm up and running with minimal fuss.
I usually back up weekly to another USB drive and all backup drives are kept on a separate site. We had a house fire once so I know that storing then in a cupboard in my house is not good enough. I'd lose both the laptop and the backups.
I have another USB drive for archive stuff, but I plan to copy those to archive quality DVDs now that I have all my photos scanned.