Unity - Repack sprites at runtime

Hi There,

So I'm trying to do some character customization where players can choose from a range of hats/swords/boots etc. To make this performance ideally I want to batch the drawing of this character once the player has selected their items.

Naively my understanding is that this could be achieved by dynamically creating a sprite atlas to hold the sprites which I have selected from the items. However I don't think it's possible to dynamically create a sprite atlas at runtime?

Does anyone know another way to potentially get around this problem?

Thanks in advance.