I recently thought of this reuse idea after discarding numerous spent propane cylinders. I recycle a lot of metals instead of throwing in the landfill but the recycling plant will not take these for obvious reasons.
The containers are quick and easy to make and offer lots of different uses such as camp stoves, speaker enclosures, storing items, one more thing to put LED's in, etc.......
Make extremely sure propane bottle is completely empty before cutting! Once bottle is empty it still has enough residual to cause a potential explosion hazard. Make sure bottle is at room temp, depress valve to ensure there is no pressure. Then puncture a hole and place bottle as if you were draining liquid out, the residual will drain because propane is heavier then air.
Step 1: Gather Tools and Materals You Will Need
Small LP bottle with plastic base
Awl or sharp punch
Step 2: Remove Plastic Base
Step 3: Make the Bottle Safe
Make sure bottle is empty. A frozen bottle with small amount of LP will seem empty until thawed so make sure of that. Depress valve with awl to assure no pressure, If no pressure exists then go ahead and punch the hole. position bottle so hole is at lowest point and let sit for a few minuets.