Not quite the same, but water when I'm out.
I sometimes swallow wrong and have halfway choked out of nowhere, so now I'm afraid to not have it always available.
Also, I'm pretty meek in real life and when I get nervous, my throat dries out and I can't swallow. Water is imparative then, even just a tiny gulp.
Most times I ironically never drink it at all, but just 'having' it is a necessity.
More of a practical comfort than emotional.