Forget about being bored. Create yourself a BuPONG – The Coolest Home Made DIY Invention – Ping Pong Bazooka – Powered by butane. Another cool weapon created by Sipski that destroys boredom! It is one of the biggest BANG sounding device ever made. This is not a toy and should never be built without a proper understanding of safety procedures. Always wear safety goggles and do the experiment outside. This is an experimental device for educational purpose only. Do not build the gas chamber beyond two liter capacity.