fav.farm (via) Neat little site by Wes Bos: it serves SVG (or PNG for Safari) favicons of every Emoji, which can be added to any site like this:
<link rel="icon" href="https://fav.farm/🔥" />
The source code is on GitHub. It runs on Deno and Deno Deploy, and recently added per-Emoji hit counters powered by the Deno KV store, implemented in db.ts using this pattern:
export function incrementCount(emoji: string) {
const VIEW_KEY = [`favicon`, `${emoji}`];
return db.atomic().sum(
VIEW_KEY, 1n
).commit(); // Increment KV by 1
}