When I was working at the NY Hall of Science (NYSCI) they had an awesome bubble station. It’s actually one of the few exhibits I remembered there from when I was a kid. And I’m not alone. Sooo many visitors would come inside and immediately ask where the bubbles were! The staff also had a good time on slow days making bubbles within bubbles. I think the record was 8.
And there’s so much interesting science with bubbles, like how their shape can be used to determine the most stable form (which is why most are basically spheres) and how the rainbow shimmer represents refraction of light.
Also, they’re super fun. And I’m always a fan of finding science in fun, surprising places.