Hello. I have wondered if it may be a good idea to make a proposal to an "spiral" character, basically because I believe is the only mayor symbol recurrently used for represent "swearing" in comics that's missing from Unicode. Most of the time it is replaced with the more common at (@), but still an actual one may be good. Not sure yet if there's enough documentation. Some Emoji representations displays the CYCLONE character (U+1F300) as one, yet I don't think that fits as a better replacement.
Andrés Sanhueza