You can create 1 object every day, and it stays materialized for an hour.

Every day, you can create 1 object within a 5 meter radius of yourself. This object can be anything you have seen in your life, but exactly one hour after its creation, it will instantaneously vanish from existence.

If the object is directly converted into anything else (cut, burnt, changing state, etc.) then the converted object will still disappear.