https://www.copypastecharacter.com

  https://www.freecodecamp.org/news/alt-codes-special-characters-keyboard-symbols-windows-list/

Most used ones:

Alt + 0149   •  bullet point
Alt + 0153   ™  trademark symbol
Alt + 0169  ©  copyright symbol
Alt + 0174  ®  registered ­ trademark symbol
Alt + 0176  °  degree symbol
Alt + 0177   ±  plus-or-minus sign
Alt + 0215  ×  multi­plication sign
Alt + 12  ♀  female sign
Alt + 11  ♂  m­ale sign
Alt + 13  ♪  e­ighth note
Alt + 14  ♫  ­beamed eighth note
Alt + 251  √  square root check mark
Alt + 8236  ∞   ­infinity
Alt + 24  ↑  up arrow
Alt + 25  ↓  down arrow
Alt + 26  →  ri­ght arrow
Alt + 27  ←  l­eft arrow
Alt + 29  ↔  lef­t right arrow
Alt + 94 ^

All of them:

૱ ꠸ ┯ ┰ ┱ ┲ ❗ ► ◄ Ă ă 0 1 2 3 4 5 6 7 8 9 Ǖ ǖ Ꞁ ¤ ­ Ð ¢ ℥ Ω ℧ K ℶ ℷ ℸ ⅇ ⅊ ⚌ ⚍ ⚎ ⚏ ⚭ ⚮ ⌀ ⏑ ⏒ ⏓ ⏔ ⏕ ⏖ ⏗ ⏘ ⏙ ⏠ ⏡ ⏦ ᶀ ᶁ ᶂ ᶃ ᶄ ᶆ ᶇ ᶈ ᶉ ᶊ ᶋ ᶌ ᶍ ᶎ ᶏ ᶐ ᶑ ᶒ ᶓ ᶔ ᶕ ᶖ ᶗ ᶘ ᶙ ᶚ ᶸ ᵯ ᵰ ᵴ ᵶ ᵹ ᵼ ᵽ ᵾ ᵿ     ‌ ‍ ‎ ‏   ⁁ ⁊         ⸜ ⸝ ¶ ¥ £ ⅕ ⅙ ⅛ ⅔ ⅖ ⅗ ⅘ ⅜ ⅚ ⅐ ⅝ ↉ ⅓ ⅑ ⅒ ⅞ ← ↑ → ↓ ↔ ↕ ↖ ↗ ↘ ↙ ↚ ↛ ↜ ↝ ↞ ↟ ↠ ↡ ↢ ↣ ↤ ↥ ↦ ↧ ↨ ↩ ↪ ↫ ↬ ↭ ↮ ↯ ↰ ↱ ↲ ↳ ↴ ↵ ↶ ↷ ↸ ↹ ↺ ↻ ↼ ↽ ↾ ↿ ⇀ ⇁ ⇂ ⇃ ⇄ ⇅ ⇆ ⇇ ⇈ ⇉ ⇊ ⇋ ⇌ ⇍ ⇎ ⇏ ⇐ ⇑ ⇒ ⇓ ⇔ ⇕ ⇖ ⇗ ⇘ ⇙ ⇚ ⇛ ⇜ ⇝ ⇞ ⇟ ⇠ ⇡ ⇢ ⇣ ⇤ ⇥ ⇦ ⇨ ⇩ ⇪ ⇧ ⇫ ⇬ ⇭ ⇮ ⇯ ⇰ ⇱ ⇲ ⇳ ⇴ ⇵ ⇶ ⇷ ⇸ ⇹ ⇺ ⇻ ⇼ ⇽ ⇾ ⇿ ⟰ ⟱ ⟲ ⟳ ⟴ ⟵ ⟶ ⟷ ⟸ ⟹ ⟺ ⟻ ⟼ ⟽ ⟾ ⟿ ⤀ ⤁ ⤂ ⤃ ⤄ ⤅ ⤆ ⤇ ⤈ ⤉ ⤊ ⤋ ⤌ ⤍ ⤎ ⤏ ⤐ ⤑ ⤒ ⤓ ⤔ ⤕ ⤖ ⤗ ⤘ ⤙ ⤚ ⤛ ⤜ ⤝ ⤞ ⤟ ⤠ ⤡ ⤢ ⤣ ⤤ ⤥ ⤦ ⤧ ⤨ ⤩ ⤪ ⤫ ⤬ ⤭ ⤮ ⤯ ⤰ ⤱ ⤲ ⤳ ⤴ ⤵ ⤶ ⤷ ⤸ ⤹ ⤺ ⤻ ⤼ ⤽ ⤾ ⤿ ⥀ ⥁ ⥂ ⥃ ⥄ ⥅ ⥆ ⥇ ⥈ ⥉ ⥊ ⥋ ⥌ ⥍ ⥎ ⥏ ⥐ ⥑ ⥒ ⥓ ⥔ ⥕ ⥖ ⥗ ⥘ ⥙ ⥚ ⥛ ⥜ ⥝ ⥞ ⥟ ⥠ ⥡ ⥢ ⥣ ⥤ ⥥ ⥦ ⥧ ⥨ ⥩ ⥪ ⥫ ⥬ ⥭ ⥮ ⥯ ⥰ ⥱ ⥲ ⥳ ⥴ ⥵ ⥶ ⥷ ⥸ ⥹ ⥺ ⥻ ⥼ ⥽ ⥾ ⥿ ➔ ➘ ➙ ➚ ➛ ➜ ➝ ➞ ➝ ➞ ➟ ➠ ➡ ➢ ➣ ➤ ➥ ➦ ➧ ➨ ➩ ➩ ➪ ➫ ➬ ➭ ➮ ➯ ➱ ➲ ➳ ➴ ➵ ➶ ➷ ➸ ➹ ➺ ➻ ➼ ➽ ➾ ⬀ ⬁ ⬂ ⬃ ⬄ ⬅ ⬆ ⬇ ⬈ ⬉ ⬊ ⬋ ⬌ ⬍ ⬎ ⬏ ⬐ ⬑ ☇ ☈ ⏎ ⍃ ⍄ ⍅ ⍆ ⍇ ⍈ ⍐ ⍗ ⍌ ⍓ ⍍ ⍔ ⍏ ⍖ ♾ ⎌ ☊ ☋ ☌ ☍ ⌃ ⌄ ⌤ ⌅ ⌆ ⌇ ⚋ ⚊ ⌌ ⌍ ⌎ ⌏ ⌐ ⌑ ⌔ ⌕ ⌗ ⌙ ⌢ ⌣ ⌯ ⌬ ⌭ ⌮ ⌖ ⌰ ⌱ ⌲ ⌳ ⌴ ⌵ ⌶ ⌷ ⌸ ⌹ ⌺ ⌻ ⌼ ⍯ ⍰ ⌽ ⌾ ⌿ ⍀ ⍁ ⍂ ⍉ ⍊ ⍋ ⍎ ⍏ ⍑ ⍒ ⍕ ⍖ ⍘ ⍙ ⍚ ⍛ ⍜ ⍝ ⍞ ⍠ ⍟ ⍡ ⍢ ⍣ ⍤ ⍥ ⍨ ⍩ ⍦ ⍧ ⍬ ⍿ ⍪ ⍮ ⍫ ⍱ ⍲ ⍭ ⍳ ⍴ ⍵ ⍶ ⍷ ⍸ ⍹ ⍺ ⍼ ⍽ ⍾ ⎀ ⎁ ⎂ ⎃ ⎄ ⎅ ⎆ ⎉ ⎊ ⎋ ⎍ ⎎ ⎏ ⎐ ⎑ ⎒ ⎓ ⎔ ⎕ ⏣ ⌓ ⏥ ⏢ ⎖ ⎲ ⎳ ⎴ ⎵ ⎶ ⎸ ⎹ ⎺ ⎻ ⎼ ⎽ ⎾ ⎿ ⏀ ⏁ ⏂ ⏃ ⏄ ⏅ ⏆ ⏇ ⏈ ⏉ ⏉ ⏋ ⏌ ⏍ ⏐ ⏤ ⏚ ⏛ Ⓝ ℰ ⓦ !       ⌘ « » ‹ › ‘ ’ “ ” „ ‚ ❝ ❞ £ ¥ € $ ¢ ¬ ¶ @ § ® © ™ ° × π ± √ ‰ Ω ∞ ≈ ÷ ~ ≠ ¹ ² ³ ½ ¼ ¾ ‐ – — | ⁄ \ [ ] { } † ‡ … · • ●  ⌥ ⌃ ⇧ ↩ ¡ ¿ ‽ ⁂ ∴ ∵ ◊ ※ ← → ↑ ↓ ☜ ☞ ☝ ☟ ✔ ★ ☆ ♺ ☼ ☂ ☺ ☹ ☃ ✉ ✿ ✄ ✈ ✌ ✎ ♠ ♦ ♣ ♥ ♪ ♫ ♯ ♀ ♂ α ß Á á À à Å å Ä ä Æ æ Ç ç É é È è Ê ê Í í Ì ì Î î Ñ ñ Ó ó Ò ò Ô ô Ö ö Ø ø Ú ú Ù ù Ü ü Ž ž ₳ ฿ ￠ € ₡ ¢ ₢ ₵ ₫ ￡ £ ₤ ₣ ƒ ₲ ₭ ₥ ₦ ₱ ＄ $ ₮ ₩ ￦ ¥ ￥ ₴ ₰ ¤ ៛ ₪ ₯ ₠ ₧ ₨ ௹ ﷼ ㍐ ৲ ৳ ~ ƻ Ƽ ƽ ¹ ¸ ¬ ¨ ɂ ǁ ¯ Ɂ ǂ ¡ ´ ° ꟾ ¦ } { | . , · ] ) [ / _ \ ¿ º § ” * – + ( ! & % $ ¼ ¾ ½ ¶ © ® @ ẟ Ɀ ` Ȿ ^ ꜠ ꜡ ỻ ‘ = : ; < ꞌ Ꞌ ꞊ ꞁ ꞈ ꞉ > ? ÷ ℾ ℿ ℔ ℩ ℉ ⅀ ℈ þ ð Þ µ ª ꝋ ꜿ Ꜿ ⱽ ⱺ ⱹ ⱷ ⱶ Ⱶ ⱴ ⱱ Ɒ ⱦ ȶ ȴ ȣ Ȣ ȡ ȝ Ȝ ț ȋ Ȋ ȉ Ȉ ǯ Ǯ ǃ ǀ ƿ ƾ ƺ ƹ Ƹ Ʒ Ʋ ư ƪ ƣ Ƣ Ɵ ƛ Ɩ ƕ ƍ ſ ỽ ⸀ ⸁ ⸂ ⸃ ⸄ ⸅ ⸆ ⸇ ⸈ ⸉ ⸊ ⸋ ⸌ ⸍ ⸎ ⸏ ⸐ ⸑ ⸒ ⸔ ⸕ ▲ ▼ ◀ ▶ ◢ ◣ ◥ ◤ △ ▽ ◿ ◺ ◹ ◸ ▴ ▾ ◂ ▸ ▵ ▿ ◃ ▹ ◁ ▷ ◅ ▻ ◬ ⟁ ⧋ ⧊ ⊿ ∆ ∇ ◭ ◮ ⧩ ⧨ ⌔ ⟐ ◇ ◆ ◈ ⬖ ⬗ ⬘ ⬙ ⬠ ⬡ ⎔ ⋄ ◊ ⧫ ⬢ ⬣ ▰ ▪ ◼ ▮ ◾ ▗ ▖ ■ ∎ ▃ ▄ ▅ ▆ ▇ █ ▌ ▐ ▍ ▎ ▉ ▊ ▋ ❘ ❙ ❚ ▀ ▘ ▝ ▙ ▚ ▛ ▜ ▟ ▞ ░ ▒ ▓ ▂ ▁ ▬ ▔ ▫ ▯ ▭ ▱ ◽ □ ◻ ▢ ⊞ ⊡ ⊟ ⊠ ▣ ▤ ▥ ▦ ⬚ ▧ ▨ ▩ ⬓ ◧ ⬒ ◨ ◩ ◪ ⬔ ⬕ ❏ ❐ ❑ ❒ ⧈ ◰ ◱ ◳ ◲ ◫ ⧇ ⧅ ⧄ ⍁ ⍂ ⟡ ⧉ ⚬ ○ ⚪ ◌ ◍ ◎ ◯ ❍ ◉ ⦾ ⊙ ⦿ ⊜ ⊖ ⊘ ⊚ ⊛ ⊝ ● ⚫ ⦁ ◐ ◑ ◒ ◓ ◔ ◕ ⦶ ⦸ ◵ ◴ ◶ ◷ ⊕ ⊗ ⦇ ⦈ ⦉ ⦊ ❨ ❩ ⸨ ⸩ ◖ ◗ ❪ ❫ ❮ ❯ ❬ ❭ ❰ ❱ ⊏ ⊐ ⊑ ⊒ ◘ ◙ ◚ ◛ ◜ ◝ ◞ ◟ ◠ ◡ ⋒ ⋓ ⋐ ⋑ ╰ ╮ ╭ ╯ ⌒ ╳ ✕ ╱ ╲ ⧸ ⧹ ⌓ ◦ ❖ ✖ ✚ ✜