I went to the park with my niece and took some photos of her on this thick low branch during the autumn.
I used a soviet projector lens with a fixed aperture of f/1.6 plus adapter that gives this swirly bokeh/petzval look.
Nothing more to add, other than the fact that shooting with a kid is always a pain...

Bought the lens from this guy in 2021, he still sells some:

https://www.ebay.fr/itm/157340449550?_skw=lucar&itmmeta=01K70BK0Q6MB7EC…