Unicode characters for special keys on the Mac keyboard (not necessarily Mac specific). #symbols

mac-keys-unicode.md

⌘ – ⌘ – ⌘ – the Command Key symbol
⌥ – ⌥ – ⌥ – the Option Key symbol
⇧ – ⇧ – ⇧ – the Shift Key symbol
⌃ – ⌃ – ⌃ – the Control Key symbol
⎋ – ⎋ – ⎋ – the ESC Key symbol
⇪ – ⇪ – ⇪ – the Capslock symbol
⏎ – ⏎ – ⏎ – the Return symbol
⌫ – ⌫ – ⌫ – the Delete / Backspace symbol
⇥ – ⇥ – ⇥ – the Tab Key symbol

Courtesy The Apple Logo in Unicode; Command, Option, & Shift Symbols in Unicode; and Special Key Symbols. The last one is ultra-complete.

Function keys (approximated):

F1:
F2: ☼ (☼)
F3:
F4: 🔍︎
F5: 🎙
F6: ☾
F7: ⏪︎
F8: ⏯︎
F9: ⏩︎
F10: 🔈︎
F11: 🔉︎
F12: 🔊︎

The F1 and F2 keys can be more correctly signified with the 🔅 and 🔆 characters, respectively.

Also, F5 has a better alternative instead of 🎙️: 🎤. In my character viewer, 🎙 is labeled as "studio microphone," while 🎤 is labeled as just "microphone." There's also the 🎤︎ character, which looks exactly like the F5 key on my Mac, and, just like how @noah-nuebling commented earlier on the 🌐︎ symbol actually being the same as 🌐, 🎤︎ is the same as 🎤.