croc all the way https://github.com/schollz/croc

https://vivobarefoot.com.au/collections/mens/products/ultra-iii-mens-obsidian-grey

https://helios-i.mashable.com/imagery/articles/020lvHtYEnOEY1Ztb1LJCV7/hero-image.fill.size_1200x900.v1676475132.png

I recommend anything from https://www.vivobarefoot.com/us/ and this podcast https://www.danielvitalis.com/rewild-yourself-podcast/the-barefoot-podiatrist-dr-ray-mcclanahan-140

allbirds has wool slipons https://m.primal.net/HkNl.png

check out glerups for another wool option https://www.glerups.com/ https://m.primal.net/HkNp.png

https://pbs.twimg.com/media/GInLk6naAAA6g5q.jpg