Eevee: A Blue Star ⭐️💙

Vaporeon: A Dolphin 🐬

Jolteon: Lightning Bolt ⚡️

Flareon: The Sun/Fire ☀️🔥

Umbreon: The Moon 🌙

Leafeon: Clover 🍀

Espeon: Transclucent Things 🔮

Glaceon: Snowflake ❄️

Sylveon: Ribbon 🎀