Preferably print in grey, and paint. Works great as an escape key. Added a smaller version to be used as any key
Print with supports to keep the ingredients up.
20% infill is what I went with, shouldn't need much.
I included the sandwich by itself as well.
Modeled the sandwich by hand, used this key cap
https://www.printables.com/model/118708-simple-cherry-mx-keycap
The author hasn't provided the model origin yet.