Write name and telephone number on forearm in permanent marker.

There is a permanent marker in the kit is there not?

I would suggest that home scanned and burned CD/DVD may not have a system readability life beyond just a few years. For those folk that have the savvy to do this they might consider a plug in external hard drive device that would offer greated longevity.

Only a few years is a bit pessimistic. But if you want to use an external HDD I would want a solid state rather than one with moving parts, esp if it's going to be mainly sitting around.

Take pictures, and write down serial numbers of all your firearms. So if some New Orleans style government forceably confiscates them illegally (as was done after Katrina) you have some ownership proof to possibly get them back later. Better to not give them up in the first place, but what do you do when a rifle is pointed in your face by "alleged" law enforcement personnel, as in New Orleans.

Plug in drives are not the best method of "backup" either. You should ideally have both and replace the drive and cd/dvd media regularly. I buy external drive enclosures rather than a pre-made drive and pop in a new drive every could years (I tend to need the space by then anyway so I need a size upgrade) and once a year copy all the backup dvd's.
I'm also working on data consolidation, I've closed most of our bank accounts such as loans and credit cards and consolidated down to just a couple banks so thats fewer statements to track. I've switched most everything to paperless billing so I can just download the statements rather than scan them. I try to keep scans in tif format rather than pdf since the file sizes are smaller and scan or bulk convert to greyscale. so instead of a bunch of 1-2M pdf's for scanned papers I have a bunch of 100-200k tif's. Now multiply by 1000 and its a bit of space.
I've also gone away from MSOffice so I can combine documents again rather than keep a bunch of smaller seperate ones and the file sizes are much smaller again with OpenOffice plus I can easily fit the portable version on the document backup dvd so I have it handy if I need to restore to someone elses system.