I was missing the ingredients for the rocket, namely white vinegar and baking soda. I tried apple cider vinegar and baking soda but couldn't close the lid fast enough for it to explode. So instead I used elephant toothpaste to which I added 1/5 yeast with a drop or two of warm water and just a drop of dish soap and filled with hydrogen peroxide. It took 2-3 minutes and we almost gave up but this rocket hit the ceiling of my cathedral and my kid loved it. We liked that no glue was required and assembly was easy for my 5 year old with my supervision. I haven't tried the others yet. Because these projects have little reward. But I'm very happy to try the rest
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