Find the skill called "Collectable Synthesis". It is a level 50 skill that each crafting class gets. Activate it before crafting. You can also activate it during crafting if you remember after you started crafting, it works too, without taking any durability or action in the craft. It's a toggle. If it's on, your item will become a "colletable", which is normally traded for blue or red scrips in Idyllshire, but the deliveries also require collectables, as opposed to regular crafts.