C’s of Survivability

  1. Cutting Tool
  2. Combustion
  3. Cover
  4. Container
  5. Cordage

Expanded:

  1. Candlelight
  2. Cotton Bandana
  3. Compass
  4. Cargo Tape
  5. Canvas Needle

Custom:

  1. Saw
  2. Fishing line
  3. Wire
  4. Water filter
  5. Blister bandages

Crucial Four (order depends on context):