I'm a junior in a high school chemistry class where we allow elementary school classes to come see a variety of experiments at the end of the year.
If anyone on this sub has any ideas, please let me know.
I want to dazzle the students with my visual prowess!
Reasonable, using economical materials and a reasonable level of safety.
This teacher has been doing this event virtually every year for the past 20 years. It's been done a dozen times with elephant toothpaste and the like.