Honestly, every game should either copy the GW2 system for cosmetics (called wardrobe) or be shamed until it does so:
-If you acquire & bind an item, it is automatically added to your skin collection.
-If you acquire a dye, it is automatically added to your dye collection.
-There is no need to store the actual item anywhere.
That's it.

It's insane that FFXIV makes us shuffle items around different storage options to wear them.