>>1145407sol bivy bag & tarp and fleece sleeping bag liner
couple space blankets or polycro sheets, 50m of 1.75mm dynema (150kg) line
spot or beacon if you can afford otherwise solar charger for phone or ham radio
3l water in reusable bottle, more in arid areas
headlamp
2 bics and a ferro rod
metal cup (500ml) with handle
Esbit stove
big SAK or Leatherman
sawyer water filter
beefy first aid kit
flare, whistle, compass
fill the rest with candy bars
should keep you alive for 72h+ in your average survival situation.