You have had confetti for the Spiral birthday. What if there were fireworks or other consumable auras?

You could shower your friend with confetti for their birthday or set of fireworks at Vanaduke or for the fourth of July, or other holidays if you aren't in the US. These could even be created as part of other events, like the Spiral Birthday had confetti, so you can create the other auras for other holidays. It would be fun to have different versions of fireworks, but even having one aura to celebrate would be a fun crown sink.