Science experiments that actually work

Ngl I've wasted a lot of money on those "science kit" things that are either way too advanced or boring AF. But we just did the volcano thing with baking soda and food coloring and vinegar and my 7yo actually watched the whole thing without wandering off to YouTube.

If anyone wants the exact link to the Nat Geo kit we used, lmk. Way better than the Cra-Z-Art garbage I tried last month.