CurseForge Link
https://www.curseforge.com/minecraft/mc-mods/hats

Mod description
A mod that adds hats that can be applied to both players and mobs (including villagers and pets).

Why would you like the mod added?
Everyone like hats, but mostly because I want these on my cats. The hats are all purely cosmetic and it also seem possible to add custom hats through configs.

@NillerMedDild Sorry to ping you, but have you taken a look at this? :)

No worries. I haven't yet, no :)

To be honest I think it's a bit too meme-y :P