If you've used reddit, you know what cake day is. Simply put, it's the day you created your account.
I propose adding a cake day indicator to Discord. When it's your cake day, your icon that displays your status (online, away, busy, etc) is a small cake instead, taking on the same color of what would be your current status.
I wouldn't mind seeing another version of this, maybe a spin on cake day, but cake seems to make the most sense.