Thing is, for "LONG term" (aka years) type stuff, soap is fairly easy to make. All you need (for all intents) is fat and lye (or other saponification agent). Lye is fairly easly gotten (run water through wood ash). As for fat, I assume in the situation I'm talking about (multi year) you're killing something for meat, so you have fat

You have to do a lot of thinking like "the old days". Harvest time was a BUSY, both in bring in the goods, but also preserving them. Heck, it's a busy time today if you do your own canning - everything is ready in the same few weeks, so you work - NOW, and party later (think 'Thanksgiving" and all the other harvest festivals)

You bring in those deer in the fall for a reason - you have some extra days of cold to work on preserving (salting and drying etc) the meat, and while your at it, using your fires to boil up all the stuff you are preserving, you're making lye from the ash, and boiling the fat and lye to make soap

Harvest time was/is an "All hands on deck" situation