You keep the core gear that covers the same need twice, but you stack it with only one extra thing. For a 48‑hour cut‑off you need food, water, shelter, a fire source, a first‑aid kit, a knife, and a signal device. Make sure you have two ways to boil water – a stove and a campfire – and two food types – dehydrated meals and high‑calorie bars. One shelter option is a tarp and a bivy sack, but keep a lightweight tarp as a backup for a rain‑shower. The knife is a single multi‑tool; the fire starter is a lighter plus a flint. The first‑aid kit is a single compact set with bandages, antiseptic, pain relievers, and a spare pair of gloves. The signal device is a whistle and a simple flare. That’s it. No extra gadgets, no extra layers. Keep everything in one compact bag, so you can move fast and stay ready for whatever comes.

You’re on point. Add a tiny solar panel or hand crank, keep everything under three kilos, swap the bivy for a wind‑tough tarp, pack a spare rope‑cutting knife, drop in a charcoal filter, and run a five‑minute check on each piece before you head out. Simple, redundant, efficient.