There was a discussion in the RC forum about whether you can attach a bubble machine to an RC airplane and whether soap bubbles are created when flying. Well, I tried it. I designed the essential components with appropriate lightweight holders.
From my point of view, the result is not so clearly visible. You would probably need 4 planes and the plane should be able to fly as slowly as possible so that the bubbles are not spread so thinly over a large area.

The uses machine:
https://www.amazon.de/dp/B0CG4BK265?psc=1&ref=ppx_yo2ov_dt_b_product_details

Here a short video about the experiment:
https://www.youtube.com/watch?v=XeLEoISK66k

Creality

Ender 5

Yes

Yes

0.2

20%