aestheticsymbols
Use in a combo

Staff of Aesculapius copy & paste

⚕ is staff of aesculapius, a plain-text Unicode symbol from the Miscellaneous Symbols block. On Aesthetic Symbols it lives in the charms & marks collection. 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+2695
HTML entity
⚕
CSS content
\2695
JavaScript
\u{2695}
UTF-8 bytes
E2 9A 95
Made of

U+2695 ⚕ · Miscellaneous Symbols

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.