aestheticsymbols
Use in a combo

Four club-spoked asterisk copy & paste

✢ is four club-spoked asterisk, a plain-text Unicode symbol from the Dingbats block. On Aesthetic Symbols it lives in the sparkles & glitter collection, tagged sparkle. As plain text it takes on the font and colour of wherever you paste it — a bio, a username, a caption or a stream title.

Unicode
U+2722
HTML entity
✢
CSS content
\2722
JavaScript
\u{2722}
UTF-8 bytes
E2 9C A2
Made of

U+2722 ✢ · Dingbats

Will it show up? · Long-established text symbols

Plain-text characters from blocks that mainstream desktop and mobile fonts have covered for years. These are the safe ones.

Worked out from how each character is encoded, not from a test on a real device.