This is something fun you can do on any occasion and is easy to build.
This rocket flies 50 feet!
Keep safety in mind when launching!
Here is a How-To video▼
Step 1: Preparing the Baking Soda
Grab a dishwasher detergent packet and cut a 1/4" hole on the corner of the packet.
Then empty the packet. (probably in your dishwasher would be best)
Fold a piece of paper in half. Put some baking soda in it and break up the clumps with your fingers.
Then carefully pour the baking soda in the empty packet.
Dip your fingers in water then use the water to seal the hole in the packet. (you'll only need a little bit of water)
The packet is finished.
Step 2: Preparing the Rocket
Empty a large Powerade bottle. (drinking it would probably be best)
Then fill the bottle about 2" from the bottom with white vinegar.
Step 3: Launching the Rocket
When you are ready to launch the rocket, turn the bottle on it's side and remove the cap.
Place the baking soda packet in the neck of the bottle being careful not to let it touch the vinegar.
Screw the cap back on very tightly.
Then turn the bottle upright and shake it vigorously for about 3 seconds.
Back up 20 feet.
In a few seconds the bottom of the bottle will burst open, sending the rocket up about 30-60 feet.
Make sure anyone watching is at least 20 feet from the rocket.
---- Some work better than others.
I had one where the bottom just cracked and sprayed vinegar everywhere.