4th-level Spell: Elemaran Courier

Whispering (Conjuration)

You summon a Small air elemental to a spot within range. The air elemental is formless, nearly transparent, immune to all damage, and cannot interact with other creatures or objects. It carries an open, empty chest whose interior dimensions are 3 feet on each side. While the spell lasts, you can deposit as many items inside the chest as will fit. You can then name a living creature you have met and seen at least once before and which you possess a body part, lock of hair, clipping from a nail, or similar portion of the creature’s body.
As soon as the lid of the chest is closed, the air elemental and the chest disappear, then reappear 1d10 hours later adjacent to the target creature if they are within 500 miles of you. If the target creature is within a Wild Kingdom or another Realm, or if it is proofed against magical detection or location, the contents of the chest reappear on the ground at your feet.
The target creature is made aware of the chest’s contents before it chooses whether or not to open it, but must choose to open it within 1 minute of the air elemental's arrival. No other creature can open the chest and retrieve its contents. When the minute is up or when all the contents of the chest have been removed, the air elemental and the chest disappear. The air elemental also disappears if the target creature orders it to return the items to you. When the air elemental disappears, any items not taken from the chest reappear on the ground at your feet.

• At Higher Levels. When you cast this spell using an 8th-level spell slot, you can send the chest to a creature in one of the Wild Kingdoms.

Source: LLK (Galder's Speedy Courier, modified)

• Casting Time: 1 minute
• Range: 10 feet
• Components: V, S, M (25gp worth of flux per 100 miles, or mineral goods of equivalent value, which the spell consumes)
• Duration: Up to 10 hours
• Ritual: No