aestheticsymbols
Use in a combo

Permanent paper sign copy & paste

♾ is permanent paper sign, a plain-text Unicode symbol from the Miscellaneous Symbols block. On Aesthetic Symbols it lives in the charms & marks collection, tagged infinity. 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+267E
HTML entity
♾
CSS content
\267E
JavaScript
\u{267E}
UTF-8 bytes
E2 99 BE
Made of

U+267E ♾ · 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.