Checklist

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Summary

st.balloons() and st.snow() are fun but fixed. Add st.emojis() so users can pass their own emoji(s) and see them fall across the app.

Why?

Many apps want custom celebration effects (birthdays, launches, wins) without being limited to balloons or snow.

How?

st.emojis(emoji: str | list[str] = "🎉")

Reuses existing snow/balloons frontend logic with emoji parameter.

Highly feasible.
Frontend already shares a reusable component between st.snow() and st.balloons(). Just extend the proto + pass emoji(s) to it.

No code injection risk (React auto-escapes {emoji} as text).

Additional Context

I am a developer and will submit a PR if approved