For Christmas it would be awesome to collect confetti instead of tokens and trade confetti in for prizes. Why? So there's more use for what we collect for after the event and for more confetti in the world.
Of course during the course of the event they'd be bound and could only be unbound after. And we'd get a slightly different confetti every year.
Then no one would use the confetti, and only trade it for prizes. Kinda defeats the purpose of making the currency confetti.