Interesting eurorack DIY parts : Dress NUT (Patreon)

電氣美術研究會(EARS :Electronic Arts Research Society), a Japanese DIY modular synth parts store, carries several original products.

https://ears-modular.com/ 

One of the products currently under development is a dress nut.
This is an anodized nut for 3.5mm jacks.
It is thicker than a regular nut, so it hides the threaded part of the jack.