Here's a hack submitted by member SurvivalTek.
Introducing the Pepsi-can stove! Cook meals with a soda can and some isopropyl alcohol!
Say you're going camping or perhaps "moving" to smaller living quarters (i.e. - 5-speed hatchback); this compact stove will definitely come in handy. And for such a two-bit contraption, it throws some serious heat.
The performance stats are impressive:* Heat output: ~4800 BTU/hour (1400 W)* Time to boil 2 cups (500 ml): ~5 minutes (<2 tablespoons (30 ml) of fuel)* Time to boil 4 cups (1 l): ~12 minutes (<3 tablespoons (45 ml) of fuel)* Burn time: ~9 minutes with 2 tablespoons (30 ml) of fuel* Burn time (full): ~30 minutes with 5-6 tablespoons (75-90 ml) of fuel