Butane ROCKET with a water bottle
If you are going to attempt this PLEASE be safe and do not aim the bottle at anyone.
Steps to do this:
1. place a VERY small hole in the top of a water bottle lid.
2. Push the butane canister onto the hole so that the gas enters the bottle. be careful to hold the bottle at the bottoom because the gas gets very cold
NOTE: the Butane canisters can be bought from any camping store for around $3 per can.
3. flip the bottle upside down and gently throw it in the direction you want it to fly. *don't just drop it otherwise it could shoot in any direction