1. The accordion file folder (with handle) I have which contains important papers (insurance policies, birth certificate, marriage license, etc.) that I always keep on the direct route from the bed to the door, for exactly this reason.
2. The box of old family photos that is currently on the couch near the back door anyway, as I’m in the process of scanning them in to share with relatives.
3. The external hard drive that I use to backup everything on the internal hard drive, since I’m unlikely to take time in a fire to dig the internal one out.
Edited to add: why? Because most of these are very hard or impossible to replace, they are small/portable, and valuable (at least to me).