A ten-dollar solid-fuel stove for the glovebox.

This is not the stove you plan a trip around. It is the one that means a hot drink is always possible — in a vehicle kit, a day pack, or a bag that lives behind the seat.

Compact, nothing mechanical, no fuel to go stale. Boils enough water for a brew or a dehydrated meal.

Hypothermia starts with being cold and wet for longer than you planned. A hot drink is a real intervention, not a comfort.