Couldn't find any salt cellars I liked that are similar to Kenji López-Alt's so I designed a rough one. The two pieces connect with two M2 screws, they should stay in place as long as your printer is well calibrated. The lid/body have a 0.5mm clearance with each other so it should slide in and twist no problem.

Also included the Fusion 360 file but fair warning, I'm terrible at using CAD

Print Settings

Printer Brand:

Creality

Printer:

Rafts:

No

Supports:

Resolution:

0.2

Infill:

Category: Kitchen & Dining