Silly script to let you take unicode input and transform it. Some samples:
$ uni-mangler --circle '#rakulang'
#ⓡⓐⓚⓤⓛⓐⓝⓖ
$ uni-mangler --invert 'Hello, github!'
¡quɥʇıƃ ,oʃʃǝH
$ uni-mangler --bold 'A bird, a plane.'
𝐀 𝐛𝐢𝐫𝐝, 𝐚 𝐩𝐥𝐚𝐧𝐞.
$ uni-mangler --paren 'lisplike'
⒧⒤⒮⒫⒧⒤⒦⒠
$ uni-mangler --combo 'combo breaker'
c̩͘o̍ͧmͮ͠b̄͋o̸̫ ̣͚b͠ͅř̗ẻ͔aͪ͢k̥̀e̒͋r͎̦
$ uni-mangler --italic 'The Telltale Heart'
𝘛𝘩𝘦 𝘛𝘦𝘭𝘭𝘵𝘢𝘭𝘦 𝘏𝘦𝘢𝘳𝘵
$ uni-mangler --square 'Presenting'
🄿 🅁 🄴 🅂 🄴 🄽 🅃 🄸 🄽 🄶
$ uni-mangler --nsquare 'A little boxy'
🅰 🅻 🅸 🆃 🆃 🅻 🅴 🅱 🅾 ❎ 🆈
$ uni-mangler --random 'Happy Birthday!'
Ⓗ⒜ⓟ𝐩𝐲 𐐒⒤𝐫⒯⒣pɐ⒴¡
Where possible, preserve input combining marks:
$ uni-mangler --outline rákü
𝕣𝕒́𝕜𝕦̈
For a more focused approach on the Mathematical Alphanumeric Symbols unicode block, try: https://modules.raku.org/dist/Text::MathematicalCase:cpan:ELIZABETH/