I've commissioned a stone mason to carve a backup of everything I have into solid blocks of granite. Since the type of information varies (text, photos, videos, etc) I've had the Mason translate everything to its raw binary state and carved in bit by bit (Ha! See what I did there!)
These are stored in my living room, which is causing some difficulty in negotiating living space--but I feel that it's worth the sacrifice.
Sure, he complains when I edit an existing document. He's hired an assistant just to keep my grocerylist.txt file up to date in the archive. I wanted to switch it to an XML structure, but I let him win that battle.
As a recovery strategy in the even of a fire my plan is to outsource the data entry to an Indian firm and take advantage of global time zones and cheap labour. I expect to be back up and running within 7.2 years in the even of a catastrophic event, if my calculations are correct. The best thing is I've eliminated all risk of media becoming obsolete: my last archive was on a Syquest Ez 135--never let it be said that I haven't learned my lesson!