You are alone in your house and it suddenly is transported back into caveman time, your house is about to be lost in time so you have to get out before you are as well. If this were to happen to me then the three things that i would hurry and take from my home would be a bag of foods to tie me over for until i can find more to survive with, a couple books to read in case i get lost and don't know where to go and am waiting to just disappear, and lastly i would take my ipod to listen to music with because there is noway a person would be able to survive out there so might as well just have a fun last couple of hours.