| hearts | 🩷 | unicode 15 (2022) — specifically pink heart, support currently spotty |
| stars | ⭐ | unicode 5.1 (2008) — hijacked as emoji later |
| horseshoes | — | closest is "horseshoe" magnet. also must be purple, which seems unlikely |
| clovers | 🍀 | unicode 6.0 (2010) — specifically four-leaf, not the three-leaf ☘️ SHAMROCK |
| blue moons | — | despite proliferation of moon emoji, there is no blue crescent moon |
| n/a | they got rid of this??????? my childhood is ruined | |
| UNICORNS | 🦄 | unicode 8.0 (2015) — nevermind this is obviously better |
| rainbows | 🌈 | unicode 6.0 (2010) |
| red balloons | 🎈 | unicode 6.0 (2010) — not normatively red, but generally depicted as such |
i hope this helps