You can also find some at https://emojicombos.com .
Hearts:
❥ ♥︎ ♡ ᜊ 𑃢 ꒧ ꇊ ͟͟͞➳❥
Stars/sparkles:
✧ ⬩ ⬧ ⬥ ⊹ ✮ ★ ☆ ✩ + * ₊˚·˚ ⋆
Flowers:
❁ ꕥ 𓆸 ✿ ❀ ꕤ ᯽ 𖧷 𑁍 𖡎 ֍ 𖦥 𖧧 𖥧 ༊ 𒀭𓇥 ❈
Faces:
☹︎ (•ᴗ•❁) ⍤ ꪔ̤̮ ꪔ̤̥ (૭ 。•̀ ᵕ •́。 )૭ (❀❛ ֊ ❛„) (˙꒳ ˙ ) ૮₍˶Ó﹏Ò ⑅₎ა ପ(๑•ᴗ•๑)ଓ (੭ˊᵕˋ)੭* (づ ᴗ _ᴗ)づ ༘৻( •̀ ᗜ •́ ৻) ₍ᐢ._.ᐢ₎♡ ੈ( ˘͈ ᵕ ˘͈♡) ૮ ˙Ⱉ˙ ა ˊᯅˋ ._.” (╹◡╹) ˘͈ᵕ˘͈ ⍣ (you can use the Japanese keyboard for more faces)
Shapes:
⩩ ⵌ ■ ❐ ❏ ⿻ ▓ ▌ ▬ ▭ ▱ ◒ ◯ ❍ 〄 ⌾ 𖣠 𖦹 ◍ ꩜ ◖ ◗°。 • ◔ ◷
Other:
❛ ❜ ⦂ 𐇻 ⚠︎ 🝎 !⁉︎ ¿? ↻ ↺ ⟲ ⟳ ◒ °。⋆⸜ ⩩ ꒰ ꒱⌇ 𓂃 ੈ 𓊆 𓊇 ꒰ ꒱ ˗ˏˋ ˎˊ˗ 𓈈 ✎ 𓅿 𖠋 ᨃ ᨓ ᨑ ᨐ ᨏ ᨎ ╭ ╯ ╭╯ ᜊ ʚ♡⃛ɞ ʚïɞ ⩌ ⩍ ⩋ 𓊌 𓇿 𓊔 ഒ ඞ ◖ ◗ 𓂃𓊝𓄹𓄺 𓆱 𖤣𖤥𖠿𖤣𖤥 ⵌ 𓈀 ❐ ❏ ⿻ ❍ Ծ ౿ 𑁯 𑁭 𑁥 ੭ ꪆ ᥫ ᘏ Ꮼ ᘓ ୬ ᘡ ୪ ১ 𖥨 ꮱ ᰢ ꮺ 𐑙 ꫤ﹅﹆ Ꮺ ᰝ ჲ ᴥ 𖦆 𓍲 𓍱 Ꮘ ફ ળ ਨ ৬ ৫ ⁀➷ ╰┈➤ : ̗̀➛ ☄︎ 𓌉◯𓇋 𓎩 ⸝⸝ 𓌈˒˒ 𓌉 𓇋 ᭡ っ 𓊘 𓄹 ﹏ 𓈒ㅤ▱ ◔ ◷ 𖦥 〨 ┊┊͙ ͙۪۪ ‿‿ ‿‿ ‿‿‿‿ 俺 𑃢 ꒧ ꇊ ¡! ↀ 〄 ⌾ 𖣠 𖦹 ꩜ ◍ 𖥧 ༊ ୨୧ 𖧧 ֒ ㄔ﹌ ﹌﹌﹌ ⎙ ⏝ ︶ ᝰ 𖬺 ꔚ ꔛ ꕁ ꕀ ꒳ ꒴ 𐂴 ৎ ຊ ∿ ꔵ ຯ ໒ ೨ Ꮺ 𓏲 𖥨 ๑ ໑ ࿔ ७ ५ ୭ ᠀ Ⳋ 𑁯 ੭ 𓁹 ꉂ ‡ ꒷ ꒦ 𖢺 ଓ ଲ ପ ମ ଘ ᳂ 𓐍 𐐫 𐐃 ⱺ • ๑ ꮻ 𓇸 𖦸 🜰 *ೃ༄ .ೃ࿐ 𓄼 𓏲 𓍢 𓍯 𓂅 𓂃 ୫ ૪