the link below will take you to the homepage:

making soap

composting solution

this only applies for some people but if you are worried about
not having sewage for an extended period of time you may want
to learn how to do composting with buckets so that you may
take a shit.

make sure to follow local laws for sanitation

a shovel

having a shovel is part of long term sanitation in an area
where a toilet and a shower are not available