I've looked at the Bushbuddy stove a few times but I've always been turned off by the price. I've also looked into the Vital stove. Still made in Canada but out east. Basically a fan fueled stove but extremely solid (the pot stand legs will support 50lbs). It doesn't gassify however.

I like the idea of the Millbank bag but it seems to only filter particulates. Can it filter Crypto? If not, then it's no better than a bandana as far as filtering goes since I already use tablets and/or a MIOX pen.

I'm just going by your idea of needing to be self-sustaining for several weeks or possibly months.

The Millbank only filters particulates but it is much better than a bandanna at it and allows more volume. You can also use one (properly sized and perhaps modified) as a carrier/protection for a solar shower or one gallon ziplock freezer bag(s) for transporting water (to a more secure or secluded location if needed) before purifying it. BTW a solar shower may not fit a "minimalist" approach but believe me, after a few weeks of "[censored]'s baths" or bathing in lakes, rivers or streams, even a luke warm shower is a great morale booster and a hot shower is better than sex (almost).

Another dietary fat idea would be several small cans of clarified butter. It should usually be refrigerated after opening but it should be safe if kept in a evaporation cooler (like a canteen cover kept damp).

I like the Olive oil idea but I've been trying to track down some Ghee for just that purpose...as well as for the camping pantry.

One of the things I struggle with when it comes to gear is that I love multitaskers. With the extra stuff I'd need to carry out this crazy idea that started this thread, I want as many multi taskers as I can to keep weight down. I also want some overlap/redundancy because re-supply can't be counted on which suits multitaskers fine...usually.

The Millbank bag is a neat idea and would be nice to have but it won't produce potable water on it's own and even with chemical treatment Crypto can still be a problem which is really what's critical...I'll stay dirty a long time if it means I have fresh drinking water. To me that makes it a bit of a liability weight and space wise.

I'm currently trying to get some multitasking out of my hydration bladder (Source 3L) by seeing if I can't adapt it to be a shower of sorts or at least a good washing aid. I'd also like an inline filter for it but before I'll use any kind of filter for this setting it needs to be backflushable or have a really long service/replacement interval. I forsee some creative bladder plumbing in my future for that.

[censored] hand" in large areas of the world.

As a substitute for toilet paper consider washing after you do your business. A couple of small spray bottles (one with soapy water, the other for rinsing) and perhaps a washcloth for drying if you don't care for drip-drying your butt.

[censored] hand" in large areas of the world.