Water filtration definitely tops my list too. Clean water is non-negotiable, especially after seeing just how quickly contaminated water can make someone sick. My second would be a basic but solid first aid kit—old habits die hard! It doesn’t have to be fancy, but I always make sure mine has extra wound care stuff, like clotting gauze and antiseptic. Third, I’d grab a lightweight tarp. Shelter can be improvised a hundred ways, but having a weatherproof layer makes all the difference, and they’re useful for collecting rainwater too.
I used to put more emphasis on food, but I’ve learned most folks can go without eating a lot longer than you’d expect. Out of curiosity, does anyone here include any herbal or natural remedies in their kit or is it mostly “modern” supplies?