This is mostly for personal reference. For a more complete list of symbols I suggest looking up a list of unicode characters.
Text symbols
| « » | guillemets | ° | degree | ¶ | pilcrow |
| ™ | trademark, tm | ® | registered tm | © | copyright |
| ✔ | check | ♫ | beamed eighth notes | ♪ | eighth note |
| ¼ | one quarter | ½ | one half | ¾ | three quarters |
Arrows
| ← | ↑ | → | ↓ | ↜ | ↝ |
| ↪ | ↬ | ↳ | ↻ | ⇓ | ⇒ |
Hearts
♡ ❤ ♥ ❣
Stars
★ ☆ ✦ ⛧ ✦ ✧ ✨ ✩
Fleurons
☙ ❦ ❧ 𐡷 𐡸 𐫱 🙗 🙙 🙛 🙟 🙢 🙣
Objects
🖈︎ ✂ 🂡 ♕ ⚔ ☂
Planetary symbols
| ☉ | sun | ☿ | mercury | ♀ | venus | 🜨 ♁ | earth | ♂ | mars |
| ♃ | jupiter | ♄ | saturn | ⛢ ♅ | uranus | ♆ ⯉ | neptune | ♇ ⯓ | pluto |
moon
🌑︎ 🌕︎ ☽ ☾︎