ah yes. toilet paper is one of those things often forgotten though not entirely essential.

basics should be covered in this order:

water - trickiest to store and transport. may be filters or purification tablets. if you can get them, oxygen solution is the ideal treatment provided your stored water has already been purified.

food - usually comes as MRE. skyflakes qualifies although protein bars are the most ideal. It's all about packing the most calories in a compact size. If you can preserve them, nuts are good too.

shelter - tarp, space blanket, paracord, duct tape

I'll try to post more information tomorrow.